diff --git a/app/Http/Controllers/Publish/EditorController.php b/app/Http/Controllers/Publish/EditorController.php
index bc48c7a..e55271c 100644
--- a/app/Http/Controllers/Publish/EditorController.php
+++ b/app/Http/Controllers/Publish/EditorController.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace App\Http\Controllers\Publish;
 
 use App\Exceptions\GeneralException;
@@ -28,11 +29,40 @@ use Illuminate\Support\Facades\View;
 use \Exception;
 use Illuminate\Support\Facades\Config;
 
+use App\Models\DatasetIdentifier;
+use App\Models\Oai\OaiModelError;
+use App\Exceptions\OaiModelException;
+use App\Interfaces\DoiInterface;
+
 class EditorController extends Controller
 {
-    public function __construct()
+     /**
+     * Holds xml representation of document information to be processed.
+     *
+     * @var \DomDocument  Defaults to null.
+     */
+    protected $xml = null;
+     /**
+     * Holds the stylesheet for the transformation.
+     *
+     * @var \DomDocument  Defaults to null.
+     */
+    protected $xslt = null;
+
+    /**
+     * Holds the xslt processor.
+     *
+     * @var \XSLTProcessor  Defaults to null.
+     */
+    protected $proc = null;
+
+    public function __construct(DoiInterface $DoiClient)
     {
+        $this->doiClient = $DoiClient;
+
         //$this->middleware('auth');
+        $this->xml = new \DomDocument();
+        $this->proc = new \XSLTProcessor();
     }
 
     /**
@@ -48,11 +78,12 @@ class EditorController extends Controller
         $builder = Dataset::query();
         //"select * from [documents] where [server_state] in (?) or ([server_state] = ? and [editor_id] = ?)"
         $datasets = $builder
+            
             ->where('server_state', 'released')
             // ->whereIn('server_state', ['released'])
             ->orWhere(function ($query) use ($user_id) {
-                $query->whereIn('server_state', ['editor_accepted', 'rejected_reviewer', 'reviewed'])
-                    ->where('editor_id', $user_id);
+                $query->whereIn('server_state', ['editor_accepted', 'rejected_reviewer', 'reviewed', 'published'])
+                    ->where('editor_id', $user_id)->doesntHave('identifier', 'and');
             })
             ->orderBy('server_date_modified', 'desc')
             ->get();
@@ -105,8 +136,10 @@ class EditorController extends Controller
         $dataset->load('licenses', 'authors', 'contributors', 'titles', 'abstracts', 'files', 'coverage', 'subjects', 'references');
 
         $titleTypes = ['Main' => 'Main', 'Sub' => 'Sub', 'Alternative' => 'Alternative', 'Translated' => 'Translated', 'Other' => 'Other'];
-        $descriptionTypes = ['Abstract' => 'Abstract', 'Methods' => 'Methods', 'Series_information' => 'Series_information',
-            'Technical_info' => 'Technical_info', 'Translated' => 'Translated', 'Other' => 'Other'];
+        $descriptionTypes = [
+            'Abstract' => 'Abstract', 'Methods' => 'Methods', 'Series_information' => 'Series_information',
+            'Technical_info' => 'Technical_info', 'Translated' => 'Translated', 'Other' => 'Other'
+        ];
         $languages = DB::table('languages')
             ->where('active', true)
             ->pluck('part1', 'part1');
@@ -126,7 +159,7 @@ class EditorController extends Controller
         $languages = DB::table('languages')
             ->where('active', true)
             ->pluck('part1', 'part1');
-        
+
         $contributorTypes = Config::get('enums.contributor_types');
         $nameTypes = Config::get('enums.name_types');
 
@@ -142,8 +175,10 @@ class EditorController extends Controller
         $referenceTypes = ["rdr-id", "doi", "handle", "isbn", "issn", "url", "urn"];
         $referenceTypes = array_combine($referenceTypes, $referenceTypes);
 
-        $relationTypes =  ["IsSupplementTo", "IsSupplementedBy", "IsContinuedBy", "Continues",
-        "IsNewVersionOf", "IsPartOf", "HasPart", "Compiles", "IsVariantFormOf"];
+        $relationTypes =  [
+            "IsSupplementTo", "IsSupplementedBy", "IsContinuedBy", "Continues",
+            "IsNewVersionOf", "IsPartOf", "HasPart", "Compiles", "IsVariantFormOf"
+        ];
         $relationTypes = array_combine($relationTypes, $relationTypes);
 
         return View::make(
@@ -415,7 +450,8 @@ class EditorController extends Controller
                     $formCoverage
                 );
             } elseif (isset($data['coverage']) && $this->containsOnlyNull($data['coverage'])
-                && !is_null($dataset->coverage)) {
+                && !is_null($dataset->coverage)
+            ) {
                 $dataset->coverage()->delete();
             }
 
@@ -592,4 +628,131 @@ class EditorController extends Controller
         }
         throw new GeneralException(trans('exceptions.publish.publish.update_error'));
     }
+
+    /**
+     * Display the specified dataset for publishing.
+     *
+     * @param  int  $id
+     * @return \Illuminate\View\View
+     */
+    public function doi($id): \Illuminate\Contracts\View\View
+    {
+        $dataset = Dataset::query()
+            ->with([
+                'titles',
+                'persons' => function ($query) {
+                    $query->wherePivot('role', 'author');
+                },
+            ])->findOrFail($id);
+
+        return View::make('workflow.editor.doi', [
+            'dataset' => $dataset,
+        ]);
+    }
+    /**
+     * Store a newly created resource in storage.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return \Illuminate\Http\Response
+     */
+    public function doiStore(Request $request, $publish_id)
+    {
+        $dataId = $publish_id; //$request->input('publish_id');
+        // Setup stylesheet
+        $this->loadStyleSheet(public_path() . '/prefixes/doi_datacite.xslt');
+
+        // set timestamp
+        $date = new \DateTime();
+        $unixTimestamp = $date->getTimestamp();
+        $this->proc->setParameter('', 'unixTimestamp', $unixTimestamp);
+
+        $prefix = "";
+        $base_domain = "";
+        $datacite_environment = config('tethys.datacite_environment');
+        if ($datacite_environment == "debug") {
+            $prefix =  config('tethys.datacite_test_prefix');
+           $base_domain = config('tethys.test_base_domain');
+        } elseif ($datacite_environment == "production") {           
+            $prefix = config('tethys.datacite_prefix');
+            $base_domain = config('tethys.base_domain');
+        }
+        // $prefix = config('tethys.datacite_prefix');
+        $this->proc->setParameter('', 'prefix', $prefix);
+
+        $repIdentifier = "tethys";
+        $this->proc->setParameter('', 'repIdentifier', $repIdentifier);
+
+        $this->xml->appendChild($this->xml->createElement('Datasets'));
+        $dataset = Dataset::where('publish_id', '=', $dataId)->firstOrFail();
+        if (is_null($dataset)) {
+            throw new OaiModelException('Dataset is not available for registering DOI!', OaiModelError::NORECORDSMATCH);
+        }
+        $dataset->fetchValues();
+        $xmlModel = new \App\Library\Xml\XmlModel();
+        $xmlModel->setModel($dataset);
+        $xmlModel->excludeEmptyFields();
+        $cache = ($dataset->xmlCache) ? $dataset->xmlCache : new \App\Models\XmlCache();
+        $xmlModel->setXmlCache($cache);
+        $domNode = $xmlModel->getDomDocument()->getElementsByTagName('Rdr_Dataset')->item(0);
+        $node = $this->xml->importNode($domNode, true);
+        $this->addSpecInformation($node, 'data-type:' . $dataset->type);
+
+        $this->xml->documentElement->appendChild($node);
+        $xmlMeta = $this->proc->transformToXML($this->xml);
+        // Log::alert($xmlMeta);
+        //create doiValue and correspunfing landingpage of tehtys
+        $doiValue = $prefix . '/tethys.' . $dataset->publish_id;
+        // $appUrl = config('app.url');
+        $landingPageUrl = $base_domain . "/dataset/" . $dataset->publish_id;
+        $response = $this->doiClient->registerDoi($doiValue, $xmlMeta, $landingPageUrl);
+        // if operation successful, store dataste identifier
+        if ($response->getStatusCode() == 201) {
+            $doi = new DatasetIdentifier();
+            $doi['value'] = $doiValue; //$landingPageUrl;
+            $doi['dataset_id'] = $dataset->id;
+            $doi['type'] = "doi";
+            $doi['status'] = "findable";
+            if ($doi->save()) {
+                // update server_date_modified for triggering nex xml cache (doi interface)
+                $time = new \Illuminate\Support\Carbon();
+                $dataset->server_date_modified = $time;
+                $dataset->save();
+                return redirect()
+                    ->route('publish.workflow.editor.index')
+                    ->with('flash_message', 'You have successfully created a DOI for the dataset!');
+            }
+        } else {
+            $message = 'unexpected DataCite MDS response code ' . $response->getStatusCode();
+            // $this->log($message, 'err');
+            throw new GeneralException($message);
+        }
+    }
+
+    /**
+     * Load an xslt stylesheet.
+     *
+     * @return void
+     */
+    private function loadStyleSheet($stylesheet)
+    {
+        $this->xslt = new \DomDocument;
+        $this->xslt->load($stylesheet);
+        $this->proc->importStyleSheet($this->xslt);
+        if (isset($_SERVER['HTTP_HOST'])) {
+            $this->proc->setParameter('', 'host', $_SERVER['HTTP_HOST']);
+        }
+        //$this->proc->setParameter('', 'server', $this->getRequest()->getBaseUrl());
+    }
+
+    private function addSpecInformation(\DOMNode $document, $information)
+    {
+        $setSpecAttribute = $this->xml->createAttribute('Value');
+        $setSpecAttributeValue = $this->xml->createTextNode($information);
+        $setSpecAttribute->appendChild($setSpecAttributeValue);
+
+        $setSpecElement = $this->xml->createElement('SetSpec');
+        //$setSpecElement =new \DOMElement("SetSpec");
+        $setSpecElement->appendChild($setSpecAttribute);
+        $document->appendChild($setSpecElement);
+    }
 }
diff --git a/app/Library/Xml/DatasetExtension.php b/app/Library/Xml/DatasetExtension.php
index 39ef043..317e151 100644
--- a/app/Library/Xml/DatasetExtension.php
+++ b/app/Library/Xml/DatasetExtension.php
@@ -7,6 +7,7 @@ use App\Models\License;
 use App\Models\Person;
 use App\Models\File;
 use App\Models\Coverage;
+use App\Models\DatasetIdentifier;
 use App\Models\Subject;
 use App\Models\DatasetReference;
 
@@ -70,6 +71,11 @@ trait DatasetExtension
             'relation' => 'references',
             'fetch' => 'eager'
         ),
+        'Identifier' => array(
+            'model' => DatasetIdentifier::class,
+            'relation' => 'identifier',
+            'fetch' => 'eager'
+        ),
         'Subject' => array(
             'model' => Subject::class,
             'relation' => 'subjects',
diff --git a/app/Models/Dataset.php b/app/Models/Dataset.php
index b53ebc1..e465884 100644
--- a/app/Models/Dataset.php
+++ b/app/Models/Dataset.php
@@ -13,6 +13,7 @@ use App\Models\Project;
 use App\Models\Title;
 use App\Models\User;
 use App\Models\XmlCache;
+use App\Models\DatasetIdentifier;
 use Carbon\Carbon;
 // use App\Models\GeolocationBox;
 use Illuminate\Database\Eloquent\Model;
@@ -96,6 +97,14 @@ class Dataset extends Model
         return $this->belongsTo(Project::class, 'project_id', 'id');
     }
 
+     /**
+     * Get the doi indentifier that owns the dataset.
+     */
+    public function identifier()
+    {
+        return $this->hasOne(DatasetIdentifier::class, 'dataset_id', 'id');
+    }
+
     /**
      * Get the account that the dataset belongs to
      */
diff --git a/app/Models/DatasetIdentifier.php b/app/Models/DatasetIdentifier.php
index bde87bf..9f0c079 100644
--- a/app/Models/DatasetIdentifier.php
+++ b/app/Models/DatasetIdentifier.php
@@ -14,6 +14,6 @@ class DatasetIdentifier extends Model
      */
     public function dataset()
     {
-        return $this->belongsTo(Dataset::class, 'document_id', 'id');
+        return $this->belongsTo(Dataset::class, 'dataset_id', 'id');
     }
 }
diff --git a/app/Providers/DoiServiceProvider.php b/app/Providers/DoiServiceProvider.php
index 94de187..8a4775d 100644
--- a/app/Providers/DoiServiceProvider.php
+++ b/app/Providers/DoiServiceProvider.php
@@ -7,7 +7,8 @@
 
 namespace App\Providers;
 
-use App\Tethys\Utils\DoiService;
+use App\Tethys\Utils\DoiClient;
+use App\Interfaces\DoiInterface;
 use Illuminate\Support\ServiceProvider;
 
 class DoiServiceProvider extends ServiceProvider
@@ -33,12 +34,12 @@ class DoiServiceProvider extends ServiceProvider
     {
         //
         $this->app->singleton('App\Interfaces\DoiInterface', function ($app) {
-            return new DoiService();
+            return new DoiClient();
         });
     }
 
     public function provides()
     {
-        return [DoiService::class];
+        return [DoiClient::class];
     }
 }
diff --git a/app/Tethys/Utils/DoiClient.php b/app/Tethys/Utils/DoiClient.php
index 45e12e2..933e2b9 100644
--- a/app/Tethys/Utils/DoiClient.php
+++ b/app/Tethys/Utils/DoiClient.php
@@ -10,20 +10,24 @@ class DoiClient implements DoiInterface
     private $username;
     private $password;
     private $serviceUrl;
+    private $prefix;
+    private $base_domain;
 
     public function __construct()
     {
-        $datacite_environment = "production"; //config('tethys.datacite_environment');
+        $datacite_environment = config('tethys.datacite_environment');
         if ($datacite_environment == "debug") {
             $this->username = config('tethys.datacite_test_username');
             $this->password = config('tethys.datacite_test_password');
-            $this->serviceUrl = config('tethys.test_datacite_service_url');
-            $this->prefix = config('tethys.datacite_prefix');
+            $this->serviceUrl = config('tethys.datacite_test_service_url');
+            $this->prefix = config('tethys.datacite_test_prefix');
+            $this->base_domain = config('tethys.test_base_domain');
         } elseif ($datacite_environment == "production") {
             $this->username = config('tethys.datacite_username');
             $this->password = config('tethys.datacite_password');
             $this->serviceUrl = config('tethys.datacite_service_url');
             $this->prefix = config('tethys.datacite_prefix');
+            $this->base_domain = config('tethys.base_domain');
         }
         if (is_null($this->username) || is_null($this->password) || is_null($this->serviceUrl)) {
             $message = 'missing configuration settings to properly initialize DOI client';
@@ -45,6 +49,7 @@ class DoiClient implements DoiInterface
     {
        
         // Schritt 1: Metadaten als XML registrieren
+        // state draft
         $response = null;
         $url = $this->serviceUrl . '/metadata/' . $doiValue;
         try {
@@ -79,7 +84,7 @@ class DoiClient implements DoiInterface
         }
 
         // Schritt 2: Register the DOI name
-        // DOI und URL der Frontdoor des zugehörigen Dokuments übergeben
+        // DOI und URL der Frontdoor des zugehörigen Dokuments übergeben: state findable
         $url = $this->serviceUrl . '/doi/' . $doiValue;
         try {
             $client = new Client(
@@ -199,7 +204,7 @@ class DoiClient implements DoiInterface
     public function updateMetadataForDoi($doiValue, $newMeta)
     {
         $response = null;
-        $url = $this->serviceUrl . '/metadata/' . $doiValue;
+        $url = $this->serviceUrl . '/metadata/' . $doiValue;       
         try {
             $client = new Client([
                 'auth' => [$this->username, $this->password],
diff --git a/composer.lock b/composer.lock
index 68ab689..c5ffb87 100755
--- a/composer.lock
+++ b/composer.lock
@@ -1359,16 +1359,16 @@
         },
         {
             "name": "laravel/framework",
-            "version": "v6.20.26",
+            "version": "v6.20.27",
             "source": {
                 "type": "git",
                 "url": "https://github.com/laravel/framework.git",
-                "reference": "0117d797dc1ab64b1f88d4f6b966380ea7def091"
+                "reference": "92c0417e60efc39bc556ba5dfc9b20a56f7848fb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/laravel/framework/zipball/0117d797dc1ab64b1f88d4f6b966380ea7def091",
-                "reference": "0117d797dc1ab64b1f88d4f6b966380ea7def091",
+                "url": "https://api.github.com/repos/laravel/framework/zipball/92c0417e60efc39bc556ba5dfc9b20a56f7848fb",
+                "reference": "92c0417e60efc39bc556ba5dfc9b20a56f7848fb",
                 "shasum": ""
             },
             "require": {
@@ -1508,7 +1508,7 @@
                 "issues": "https://github.com/laravel/framework/issues",
                 "source": "https://github.com/laravel/framework"
             },
-            "time": "2021-04-28T14:38:32+00:00"
+            "time": "2021-05-11T14:00:28+00:00"
         },
         {
             "name": "laravel/tinker",
@@ -1652,16 +1652,16 @@
         },
         {
             "name": "league/commonmark",
-            "version": "1.6.1",
+            "version": "1.6.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/commonmark.git",
-                "reference": "2651c497f005de305c7ba3f232cbd87b8c00ee8c"
+                "reference": "7d70d2f19c84bcc16275ea47edabee24747352eb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/2651c497f005de305c7ba3f232cbd87b8c00ee8c",
-                "reference": "2651c497f005de305c7ba3f232cbd87b8c00ee8c",
+                "url": "https://api.github.com/repos/thephpleague/commonmark/zipball/7d70d2f19c84bcc16275ea47edabee24747352eb",
+                "reference": "7d70d2f19c84bcc16275ea47edabee24747352eb",
                 "shasum": ""
             },
             "require": {
@@ -1749,7 +1749,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-08T16:08:00+00:00"
+            "time": "2021-05-12T11:39:41+00:00"
         },
         {
             "name": "league/flysystem",
@@ -2076,16 +2076,16 @@
         },
         {
             "name": "nesbot/carbon",
-            "version": "2.47.0",
+            "version": "2.48.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/briannesbitt/Carbon.git",
-                "reference": "606262fd8888b75317ba9461825a24fc34001e1e"
+                "reference": "d3c447f21072766cddec3522f9468a5849a76147"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/briannesbitt/Carbon/zipball/606262fd8888b75317ba9461825a24fc34001e1e",
-                "reference": "606262fd8888b75317ba9461825a24fc34001e1e",
+                "url": "https://api.github.com/repos/briannesbitt/Carbon/zipball/d3c447f21072766cddec3522f9468a5849a76147",
+                "reference": "d3c447f21072766cddec3522f9468a5849a76147",
                 "shasum": ""
             },
             "require": {
@@ -2165,7 +2165,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-04-13T21:54:02+00:00"
+            "time": "2021-05-07T10:08:30+00:00"
         },
         {
             "name": "nikic/php-parser",
@@ -3016,16 +3016,16 @@
         },
         {
             "name": "symfony/console",
-            "version": "v4.4.22",
+            "version": "v4.4.23",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/console.git",
-                "reference": "36bbd079b69b94bcc9c9c9e1e37ca3b1e7971625"
+                "reference": "1ab187ac21d41d7d34a4f529091a1f5d0bb2924f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/console/zipball/36bbd079b69b94bcc9c9c9e1e37ca3b1e7971625",
-                "reference": "36bbd079b69b94bcc9c9c9e1e37ca3b1e7971625",
+                "url": "https://api.github.com/repos/symfony/console/zipball/1ab187ac21d41d7d34a4f529091a1f5d0bb2924f",
+                "reference": "1ab187ac21d41d7d34a4f529091a1f5d0bb2924f",
                 "shasum": ""
             },
             "require": {
@@ -3085,7 +3085,7 @@
             "description": "Eases the creation of beautiful and testable command line interfaces",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/console/tree/v4.4.22"
+                "source": "https://github.com/symfony/console/tree/v4.4.23"
             },
             "funding": [
                 {
@@ -3101,7 +3101,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-04-16T17:32:19+00:00"
+            "time": "2021-05-10T12:53:15+00:00"
         },
         {
             "name": "symfony/css-selector",
@@ -3306,16 +3306,16 @@
         },
         {
             "name": "symfony/error-handler",
-            "version": "v4.4.22",
+            "version": "v4.4.23",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/error-handler.git",
-                "reference": "76603a8df8e001436df80758eb03a8baa5324175"
+                "reference": "21d75bfbdfdd3581a7f97080deb98926987f14a7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/error-handler/zipball/76603a8df8e001436df80758eb03a8baa5324175",
-                "reference": "76603a8df8e001436df80758eb03a8baa5324175",
+                "url": "https://api.github.com/repos/symfony/error-handler/zipball/21d75bfbdfdd3581a7f97080deb98926987f14a7",
+                "reference": "21d75bfbdfdd3581a7f97080deb98926987f14a7",
                 "shasum": ""
             },
             "require": {
@@ -3355,7 +3355,7 @@
             "description": "Provides tools to manage errors and ease debugging PHP code",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/error-handler/tree/v4.4.22"
+                "source": "https://github.com/symfony/error-handler/tree/v4.4.23"
             },
             "funding": [
                 {
@@ -3371,7 +3371,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-04-02T07:50:12+00:00"
+            "time": "2021-05-02T20:47:26+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
@@ -3537,16 +3537,16 @@
         },
         {
             "name": "symfony/finder",
-            "version": "v4.4.20",
+            "version": "v4.4.23",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/finder.git",
-                "reference": "2543795ab1570df588b9bbd31e1a2bd7037b94f6"
+                "reference": "67b77716f517e3f864759232e1201e7aa2ab0e82"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/finder/zipball/2543795ab1570df588b9bbd31e1a2bd7037b94f6",
-                "reference": "2543795ab1570df588b9bbd31e1a2bd7037b94f6",
+                "url": "https://api.github.com/repos/symfony/finder/zipball/67b77716f517e3f864759232e1201e7aa2ab0e82",
+                "reference": "67b77716f517e3f864759232e1201e7aa2ab0e82",
                 "shasum": ""
             },
             "require": {
@@ -3578,7 +3578,7 @@
             "description": "Finds files and directories via an intuitive fluent interface",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/finder/tree/v4.4.20"
+                "source": "https://github.com/symfony/finder/tree/v4.4.23"
             },
             "funding": [
                 {
@@ -3594,7 +3594,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-02-12T10:48:09+00:00"
+            "time": "2021-05-09T09:13:09+00:00"
         },
         {
             "name": "symfony/http-client-contracts",
@@ -3676,16 +3676,16 @@
         },
         {
             "name": "symfony/http-foundation",
-            "version": "v4.4.22",
+            "version": "v4.4.23",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/http-foundation.git",
-                "reference": "1a6f87ef99d05b1bf5c865b4ef7992263e1cb081"
+                "reference": "2ffb43bd6c589a274ee1e93a5fd6b7ef1577b9c5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/1a6f87ef99d05b1bf5c865b4ef7992263e1cb081",
-                "reference": "1a6f87ef99d05b1bf5c865b4ef7992263e1cb081",
+                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/2ffb43bd6c589a274ee1e93a5fd6b7ef1577b9c5",
+                "reference": "2ffb43bd6c589a274ee1e93a5fd6b7ef1577b9c5",
                 "shasum": ""
             },
             "require": {
@@ -3724,7 +3724,7 @@
             "description": "Defines an object-oriented layer for the HTTP specification",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/http-foundation/tree/v4.4.22"
+                "source": "https://github.com/symfony/http-foundation/tree/v4.4.23"
             },
             "funding": [
                 {
@@ -3740,20 +3740,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-04-30T12:05:50+00:00"
+            "time": "2021-05-05T07:40:41+00:00"
         },
         {
             "name": "symfony/http-kernel",
-            "version": "v4.4.22",
+            "version": "v4.4.23",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/http-kernel.git",
-                "reference": "cd2e325fc34a4a5bbec91eecf69dda8ee8c5ea4f"
+                "reference": "95bb42312503a212f4467529bac8735f01226ff9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/http-kernel/zipball/cd2e325fc34a4a5bbec91eecf69dda8ee8c5ea4f",
-                "reference": "cd2e325fc34a4a5bbec91eecf69dda8ee8c5ea4f",
+                "url": "https://api.github.com/repos/symfony/http-kernel/zipball/95bb42312503a212f4467529bac8735f01226ff9",
+                "reference": "95bb42312503a212f4467529bac8735f01226ff9",
                 "shasum": ""
             },
             "require": {
@@ -3828,7 +3828,7 @@
             "description": "Provides a structured process for converting a Request into a Response",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/http-kernel/tree/v4.4.22"
+                "source": "https://github.com/symfony/http-kernel/tree/v4.4.23"
             },
             "funding": [
                 {
@@ -3844,7 +3844,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-01T14:38:48+00:00"
+            "time": "2021-05-12T13:13:32+00:00"
         },
         {
             "name": "symfony/mime",
@@ -4807,16 +4807,16 @@
         },
         {
             "name": "symfony/translation",
-            "version": "v4.4.21",
+            "version": "v4.4.23",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/translation.git",
-                "reference": "eb8f5428cc3b40d6dffe303b195b084f1c5fbd14"
+                "reference": "ff6e63c7b5de874464642969968f61f8dc649ac3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/translation/zipball/eb8f5428cc3b40d6dffe303b195b084f1c5fbd14",
-                "reference": "eb8f5428cc3b40d6dffe303b195b084f1c5fbd14",
+                "url": "https://api.github.com/repos/symfony/translation/zipball/ff6e63c7b5de874464642969968f61f8dc649ac3",
+                "reference": "ff6e63c7b5de874464642969968f61f8dc649ac3",
                 "shasum": ""
             },
             "require": {
@@ -4875,7 +4875,7 @@
             "description": "Provides tools to internationalize your application",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/translation/tree/v4.4.21"
+                "source": "https://github.com/symfony/translation/tree/v4.4.23"
             },
             "funding": [
                 {
@@ -4891,7 +4891,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-03-23T16:25:01+00:00"
+            "time": "2021-04-28T06:59:52+00:00"
         },
         {
             "name": "symfony/translation-contracts",
diff --git a/config/tethys.php b/config/tethys.php
index 32ee19a..eb27945 100644
--- a/config/tethys.php
+++ b/config/tethys.php
@@ -2,12 +2,21 @@
 return [
     'repoid' => 3156505,
     'ccBaseuri' => 'https://creativecommons.org/licenses/|/3.0/',
+    
+    'datacite_environment' => env('DATACITE_ENVIRONMENT'),
+
     'datacite_username' => env('DATACITE_USERNAME'),
-    // 'datacite_test_username' => env('DATACITE_TEST_USERNAME'),
+    'datacite_test_username' => env('DATACITE_TEST_USERNAME'),
+    
     'datacite_password' => env('DATACITE_PASSWORD'),
-    // 'datacite_test_password' => env('DATACITE_TEST_PASSWORD'),
-    'datacite_service_url' => env('DATACITE_SERVICE_URL'),
-    // 'datacite_test_service_url' => env('DATACITE_TEST_SERVICE_URL'),
+    'datacite_test_password' => env('DATACITE_TEST_PASSWORD'),
+    
     'datacite_prefix' => env('DATACITE_PREFIX'),
-    'base_domain' => 'https://www.tethys.at/',
+    'datacite_test_prefix' => env('DATACITE_TEST_PREFIX'),
+
+    'datacite_service_url' => env('DATACITE_SERVICE_URL'),
+    'datacite_test_service_url' => env('DATACITE_TEST_SERVICE_URL'),
+
+    'base_domain' => env('BASE_DOMAIN', 'https://tethys.at'),
+    'test_base_domain' => env('TEST_BASE_DOMAIN')
 ];
diff --git a/doi_notes.txt b/doi_notes.txt
index 5f7000c..05e63b7 100644
--- a/doi_notes.txt
+++ b/doi_notes.txt
@@ -7,4 +7,14 @@ php artisan make:controller DOIController --resource --model "Models\DatasetIden
 composer require guzzlehttp/guzzle
 
 
-php artisan make:migration create_dataset_identifiers_table --table="dataset_identifiers"
\ No newline at end of file
+php artisan make:migration create_dataset_identifiers_table --table="dataset_identifiers"
+
+
+make php unit tests:
+php artisan test --testsuite=Feature 
+via composer:
+composer test
+
+
+siehe https://doi.datacite.org/repositories/tuw.tethys/dois (angemeldet)
+e.g. https://doi.org/10.24341/tethys.1
\ No newline at end of file
diff --git a/public/prefixes/oai_datacite.xslt b/public/prefixes/oai_datacite.xslt
index ea18e99..9483221 100644
--- a/public/prefixes/oai_datacite.xslt
+++ b/public/prefixes/oai_datacite.xslt
@@ -28,27 +28,35 @@
  * xml as required by the OAI-PMH protocol.
  */
 -->
-<xsl:stylesheet version="1.0" 
-    xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
-    xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" 
-    xmlns:dc="http://purl.org/dc/elements/1.1/" 
-    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+<xsl:stylesheet version="1.0"
+    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+    xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:php="http://php.net/xsl" exclude-result-prefixes="php">
 
     <xsl:output method="xml" indent="yes" />
 
     <xsl:template match="Rdr_Dataset" mode="oai_datacite">
-        <resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+        <resource xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://datacite.org/schema/kernel-4" xsi:schemaLocation="http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4.3/metadata.xsd">
             <!-- <isReferenceQuality>true</isReferenceQuality>
       <schemaVersion>4.3</schemaVersion>
       <datacentreSymbol>RDR.GBA</datacentreSymbol> -->
-            <identifier>
-                <xsl:text>oai:</xsl:text>
-                <xsl:value-of select="$repIdentifier" />
-                <xsl:text>:</xsl:text>
-                <xsl:value-of select="@PublishId" />
-            </identifier>
+            <xsl:choose>
+                <xsl:when test="Identifier">
+                   <xsl:apply-templates name="Identifier" mode="oai_datacite" />
+                </xsl:when>
+                <xsl:otherwise>
+                    <identifier>
+                        <xsl:text>oai:</xsl:text>
+                        <xsl:value-of select="$repIdentifier" />
+                        <xsl:text>:</xsl:text>
+                        <xsl:value-of select="@PublishId" />
+                    </identifier>
+                </xsl:otherwise>
+            </xsl:choose>
+
             <!--<datacite:creator>-->
             <creators>
                 <xsl:apply-templates select="PersonAuthor" mode="oai_datacite" />
@@ -122,7 +130,7 @@
         </resource>
     </xsl:template>
 
-    <xsl:template name="RdrDate2" mode="oai_datacite" 
+    <xsl:template name="RdrDate2" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <xsl:if test="EmbargoDate and ($unixTimestamp &lt; EmbargoDate/@UnixTimestamp)">
             <date>
@@ -148,7 +156,7 @@
         </xsl:if>
     </xsl:template>
 
-    <xsl:template match="Coverage" mode="oai_datacite" 
+    <xsl:template match="Coverage" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <geoLocation>
             <geoLocationBox>
@@ -168,7 +176,7 @@
         </geoLocation>
     </xsl:template>
 
-    <xsl:template match="TitleAbstract" mode="oai_datacite" 
+    <xsl:template match="TitleAbstract" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <description>
             <xsl:attribute name="xml:lang">
@@ -182,7 +190,7 @@
             <xsl:value-of select="@Value" />
         </description>
     </xsl:template>
-    <xsl:template match="TitleAbstractAdditional" mode="oai_datacite" 
+    <xsl:template match="TitleAbstractAdditional" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <description>
             <xsl:attribute name="xml:lang">
@@ -196,8 +204,15 @@
             <xsl:value-of select="@Value" />
         </description>
     </xsl:template>
+    
+    <xsl:template match="Identifier" mode="oai_datacite"
+        xmlns="http://datacite.org/schema/kernel-4">
+        <identifier identifierType="DOI">
+         <xsl:value-of select="@Value" />
+        </identifier>
+    </xsl:template>
 
-    <xsl:template match="TitleMain" mode="oai_datacite" 
+    <xsl:template match="TitleMain" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <title>
             <xsl:if test="@Language != ''">
@@ -213,7 +228,7 @@
             <xsl:value-of select="@Value"/>
         </title>
     </xsl:template>
-    <xsl:template match="TitleAdditional" mode="oai_datacite" 
+    <xsl:template match="TitleAdditional" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <title>
             <xsl:if test="@Language != ''">
@@ -230,7 +245,7 @@
         </title>
     </xsl:template>
 
-    <xsl:template match="Subject" mode="oai_datacite" 
+    <xsl:template match="Subject" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <subject>
             <xsl:if test="@Language != ''">
@@ -242,18 +257,18 @@
         </subject>
     </xsl:template>
 
-    <xsl:template name="AlternateIdentifier" mode="oai_datacite" 
+    <xsl:template name="AlternateIdentifier" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <alternateIdentifier >
             <xsl:attribute name="alternateIdentifierType">
                 <xsl:text>url</xsl:text>
             </xsl:attribute>
             <!-- <xsl:variable name="identifier" select="concat($repURL, '/dataset/', @Id)" /> -->
-           <xsl:value-of select="@landingpage"/>
+            <xsl:value-of select="@landingpage"/>
         </alternateIdentifier >
     </xsl:template>
 
-    <xsl:template match="Reference" mode="oai_datacite" 
+    <xsl:template match="Reference" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <relatedIdentifier>
             <xsl:attribute name="relatedIdentifierType">
@@ -266,7 +281,7 @@
         </relatedIdentifier>
     </xsl:template>
 
-    <xsl:template match="PersonContributor" mode="oai_datacite" 
+    <xsl:template match="PersonContributor" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <contributor>
             <xsl:if test="@ContributorType != ''">
@@ -285,7 +300,7 @@
         </contributor>
     </xsl:template>
 
-    <xsl:template match="PersonAuthor" mode="oai_datacite" 
+    <xsl:template match="PersonAuthor" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <creator>
             <creatorName>
@@ -323,14 +338,14 @@
         </creator>
     </xsl:template>
 
-    <xsl:template match="File/@MimeType" mode="oai_datacite" 
+    <xsl:template match="File/@MimeType" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <format>
             <xsl:value-of select="." />
         </format>
     </xsl:template>
 
-    <xsl:template match="Licence" mode="oai_datacite" 
+    <xsl:template match="Licence" mode="oai_datacite"
         xmlns="http://datacite.org/schema/kernel-4">
         <rights>
             <xsl:if test="@LinkLicence != ''">
diff --git a/resources/views/frontend/dataset/show.blade.php b/resources/views/frontend/dataset/show.blade.php
index cc67c00..39d6295 100644
--- a/resources/views/frontend/dataset/show.blade.php
+++ b/resources/views/frontend/dataset/show.blade.php
@@ -42,6 +42,12 @@
 
                   <div class="tab-pane content-metadata active" id="one">
 
+                    @if($dataset->identifier()->exists())
+                    <p class="dataset__abstract" v-if="dataset.subject && dataset.subject.length > 0">
+                      DOI: {{ $dataset->identifier->value  }}
+                    </p>
+                    @endif
+
                     @if($dataset->additionalTitles()->exists())
                     <p class="dataset__abstract">
                       Zusätzliche Titel:
diff --git a/resources/views/workflow/editor/doi.blade.php b/resources/views/workflow/editor/doi.blade.php
new file mode 100644
index 0000000..9add037
--- /dev/null
+++ b/resources/views/workflow/editor/doi.blade.php
@@ -0,0 +1,81 @@
+@extends('settings.layouts.app')
+@section('content')
+<div class="header">
+    <h3 class="header-title">
+        <i class="fa fa-share"></i> DOI for published dataset
+    </h3>
+</div>
+
+<div class="pure-g  box-content">
+
+    <div class="pure-u-1 pure-u-md-1">
+        <div>
+            <a href="{{ route('publish.workflow.editor.index') }}" class="pure-button button-small">
+                <i class="fa fa-chevron-left"></i>
+                <span>BACK</span>
+            </a>
+        </div>
+        <div id="app1">
+
+            {!! Form::model($dataset, [ 'method' => 'POST', 'route' => ['publish.workflow.editor.doiStore',
+            $dataset->publish_id],
+            'id' => 'doiForm', 'class' => 'pure-form', 'enctype' => 'multipart/form-data', 'v-on:submit.prevent' =>
+            'checkForm'])
+            !!}
+            <fieldset id="fieldset-General">
+
+
+                <h3>Selected Dataset</h3>
+                <table style="margin-left: 2em">
+                    <tbody>
+                        <tr>
+                            <td style="vertical-align: top; padding-right: 1em">{{ $dataset->id }}</td>
+                            <td>
+                                @foreach($dataset->titles as $title)
+                                <div class="title" style="font-weight: bold">
+                                    {{ $title->value }}
+                                </div>
+                                @endforeach
+                                <div class="authors">
+                                    @foreach($dataset->persons as $author)
+                                    {{ $author->full_name }}
+                                    @endforeach
+                                </div>
+                                <input type="hidden" name="selected[]" value="49">
+                            </td>
+                        </tr>
+                    </tbody>
+                </table>
+{{-- 
+                <div class="pure-u-1 pure-u-md-1-2 pure-div">
+                    {!! Form::label('publisher_name', 'Publisher Name') !!}
+                    {!! Form::text('publisher_name', 'Geologische Bundesanstalt (GBA)', ['readonly', 'class' =>
+                    'pure-u-23-24', ]) !!}
+                </div> --}}
+                <div class="pure-controls instruction ">
+                    <p>
+                        Are you sure you want to make a DOI for the selected dataset?
+                    </p>
+                    <button type="submit" class="pure-button">
+                        <i class="fa fa-share"></i>
+                        <span>Make DOI</span>
+                    </button>
+                    
+
+                </div>
+
+            </fieldset>
+
+            <br />
+
+
+            {!! Form::close() !!}
+        </div>
+    </div>
+
+</div>
+
+
+@stop
+@section('after-scripts')
+@stop
\ No newline at end of file
diff --git a/resources/views/workflow/editor/index.blade.php b/resources/views/workflow/editor/index.blade.php
index 157ef5c..b44cef1 100644
--- a/resources/views/workflow/editor/index.blade.php
+++ b/resources/views/workflow/editor/index.blade.php
@@ -32,7 +32,9 @@
                     $rowclass = 'reviewed';   
                 }elseif ($dataset->server_state == 'released') {
                     $rowclass = 'released';   
-                }         
+                } elseif ($dataset->server_state == 'published') {
+                    $rowclass = 'released';   
+                }           
                 @endphp
                 <tr class="{{ $rowclass }}">
                     <td>
@@ -80,6 +82,11 @@
                         <a href="{{ URL::route('publish.workflow.editor.publishUpdate', $dataset->id) }}" class="pure-button">
                             <i class="fa fa-edit"></i>
                             <span>Publish</span>
+                        </a>
+                        @elseif ($dataset->server_state == "published" && ! $dataset->identifier()->exists())
+                        <a href="{{ URL::route('publish.workflow.editor.doi', $dataset->id) }}" class="pure-button">
+                            <i class="fa fa-edit"></i>
+                            <span>Make DOI</span>
                         </a>                        
                         @endif
                     </td>
diff --git a/routes/web.php b/routes/web.php
index 88fbc35..76e7239 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -139,6 +139,14 @@ Route::group(
             'middleware' => ['permission:dataset-publish'],
             'as' => 'workflow.editor.publishUpdate', 'uses' => 'EditorController@publishUpdate',
         ]);
+        Route::get('workflow/editor/doi/{id}', [
+            'middleware' => ['permission:dataset-publish'],
+            'as' => 'workflow.editor.doi', 'uses' => 'EditorController@doi',
+        ]);
+        Route::post('workflow/editor/doi/{publish_id}', [
+            'middleware' => ['permission:dataset-publish'],
+            'as' => 'workflow.editor.doiStore', 'uses' => 'EditorController@doiStore',
+        ]);
 
         //reviewer
         Route::get('workflow/review/index', [