diff --git a/app/Http/Controllers/Oai/RequestController.php b/app/Http/Controllers/Oai/RequestController.php
index 1b9c684..4e518ff 100644
--- a/app/Http/Controllers/Oai/RequestController.php
+++ b/app/Http/Controllers/Oai/RequestController.php
@@ -4,6 +4,7 @@ namespace App\Http\Controllers\Oai;
 use App\Exceptions\OaiModelException;
 use App\Http\Controllers\Controller;
 use App\Models\Dataset;
+use App\Models\Project;
 use App\Models\Oai\Configuration as OaiModelConfiguration;
 use App\Models\Oai\OaiModelError;
 use App\Models\Oai\ResumptionTokens;
@@ -118,6 +119,7 @@ class RequestController extends Controller
         // set OAI base url
         $uri = explode('?', $_SERVER['REQUEST_URI'], 2);
         $this->proc->setParameter('', 'baseURL', url('/') . $uri[0]);
+        $this->proc->setParameter('', 'repURL', url('/'));
 
         // $resumptionPath = $this->configuration->getResumptionTokenPath();
 
@@ -298,12 +300,13 @@ class RequestController extends Controller
 
         //$oaiSets = new Oai_Model_Sets();
         $sets = array(
-            'bibliography:true' => 'Set for bibliographic entries',
-            'bibliography:false' => 'Set for non-bibliographic entries',
+            // 'bibliography:true' => 'Set for bibliographic entries',
+            // 'bibliography:false' => 'Set for non-bibliographic entries',
         );
         $sets = array_merge(
             $sets,
-            $this->getSetsForDocumentTypes()
+            $this->getSetsForDocumentTypes(),
+            $this->getSetsForProjects(),
         );
         //$sets = $this->getSetsForDocumentTypes();
 
@@ -387,12 +390,21 @@ class RequestController extends Controller
             $finder->whereIn('server_state', $this->deliveringDocumentStates);
             if (array_key_exists('set', $oaiRequest)) {
                 $setarray = explode(':', $oaiRequest['set']);
+                
                 if ($setarray[0] == 'data-type') {
                     if (count($setarray) === 2 and !empty($setarray[1])) {
                         $finder->where('type', $setarray[1]);
                     }
+                } elseif ($setarray[0] == 'project') {
+                    if (count($setarray) === 2 and !empty($setarray[1])) {
+                        // $finder->where('type', $setarray[1]);
+                        $finder->whereHas('project', function ($q) use ($setarray) {
+                            $q->where('label', $setarray[1]);
+                        });
+                    }
                 }
             }
+            
             $totalIds = $finder->count();
             $reldocIds = $finder->pluck('id')->toArray();
         }
@@ -522,6 +534,31 @@ class RequestController extends Controller
         return $xmlModel->getDomDocument()->getElementsByTagName('Rdr_Dataset')->item(0);
     }
 
+     /**
+     * Returns oai sets for projects.
+     * @return array
+     */
+    private function getSetsForProjects()
+    {
+        $setSpecPattern = self::SET_SPEC_PATTERN;
+        $sets = array();
+
+        $projects = Project::pluck('name', 'label')->toArray();
+        foreach ($projects as $doctype => $row) {
+            if (0 == preg_match("/^$setSpecPattern$/", $doctype)) {
+                $msg = "Invalid SetSpec (doctype='" . $doctype . "')."
+                    . " Allowed characters are [$setSpecPattern].";
+                Log::error("OAI-PMH: $msg");
+                continue;
+            }
+
+            $setSpec = 'project:' . $doctype;
+            // $count = $row['count'];
+            $sets[$setSpec] = "Set for project '$doctype'";
+        }
+        return $sets;
+    }
+
     /**
      * Returns oai sets for document types.
      * @return array
@@ -576,7 +613,7 @@ class RequestController extends Controller
 
         $identify = $sxe->addChild('Identify');
         $identify->addChild('repositoryName', "Data Research Repository");
-        $identify->addChild('baseURL', "http://tethys.geologie.ac.at/");
+        $identify->addChild('baseURL', "https://tethys.at/");
         $identify->addChild('protocolVersion', '2.0');
         $identify->addChild('adminEmail', 'repository@geologie.ac.at');
         //$identify->addChild('earliestDatestamp', '2017-04-07');
diff --git a/composer.json b/composer.json
index aaeb053..9f9ae02 100755
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
 		"davejamesmiller/laravel-breadcrumbs": "5.x",
 		"felixkiss/uniquewith-validator": "^3.1",
 		"fideloper/proxy": "^4.0",
-		"laravel/framework": "^6.0",
+		"laravel/framework": "^6.2",
 		"laravel/tinker": "^1.0",
 		"laravelcollective/html": "^6.1",
 		"mcamara/laravel-localization": "^1.3",
diff --git a/composer.lock b/composer.lock
index d71f015..d64d55f 100755
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "7b170cd659a0ccd3c23b01d9b459f749",
+    "content-hash": "413b881be459667c601f26e12d21c034",
     "packages": [
         {
             "name": "arifhp86/laravel-clear-expired-cache-file",
@@ -1030,16 +1030,16 @@
         },
         {
             "name": "laravelcollective/html",
-            "version": "v6.1.0",
+            "version": "v6.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/LaravelCollective/html.git",
-                "reference": "64f2268bf41bf02b3a9dd3c30f102e934d721664"
+                "reference": "895115187e6fca81350a0b1152b5804f52a8ac28"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/LaravelCollective/html/zipball/64f2268bf41bf02b3a9dd3c30f102e934d721664",
-                "reference": "64f2268bf41bf02b3a9dd3c30f102e934d721664",
+                "url": "https://api.github.com/repos/LaravelCollective/html/zipball/895115187e6fca81350a0b1152b5804f52a8ac28",
+                "reference": "895115187e6fca81350a0b1152b5804f52a8ac28",
                 "shasum": ""
             },
             "require": {
@@ -1094,7 +1094,7 @@
             ],
             "description": "HTML and Form Builders for the Laravel Framework",
             "homepage": "https://laravelcollective.com",
-            "time": "2020-03-02T16:41:28+00:00"
+            "time": "2020-05-17T20:19:55+00:00"
         },
         {
             "name": "league/commonmark",
@@ -1198,16 +1198,16 @@
         },
         {
             "name": "league/flysystem",
-            "version": "1.0.68",
+            "version": "1.0.69",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/flysystem.git",
-                "reference": "3e4198372276ec99ac3409a21d7c9d1ced9026e4"
+                "reference": "7106f78428a344bc4f643c233a94e48795f10967"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/3e4198372276ec99ac3409a21d7c9d1ced9026e4",
-                "reference": "3e4198372276ec99ac3409a21d7c9d1ced9026e4",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/7106f78428a344bc4f643c233a94e48795f10967",
+                "reference": "7106f78428a344bc4f643c233a94e48795f10967",
                 "shasum": ""
             },
             "require": {
@@ -1284,7 +1284,7 @@
                     "type": "other"
                 }
             ],
-            "time": "2020-05-12T20:33:44+00:00"
+            "time": "2020-05-18T15:13:39+00:00"
         },
         {
             "name": "mcamara/laravel-localization",
diff --git a/public/css/search_style.css b/public/css/search_style.css
index bd53b00..fdd025c 100644
--- a/public/css/search_style.css
+++ b/public/css/search_style.css
@@ -65,6 +65,7 @@ section.search {
 .record-elem .h4, .record-elem h4 {
     font-size: 16px;
     letter-spacing: .05em;
+    margin-top: 8px;
   }
   .record-detail h1, .record-detail p, 
   .record-elem h4, 
diff --git a/public/datasetxml2oai-pmh.xslt b/public/datasetxml2oai-pmh.xslt
index 216c854..0950fe5 100644
--- a/public/datasetxml2oai-pmh.xslt
+++ b/public/datasetxml2oai-pmh.xslt
@@ -38,6 +38,7 @@
   <xsl:param name="oai_error_code" />
   <xsl:param name="oai_error_message" />
   <xsl:param name="baseURL" />
+  <xsl:param name="repURL" />
 
 
 
@@ -394,7 +395,7 @@
       )" />
       <xsl:value-of select="$geolocation" />
 
-      <xsl:text>&#xA;</xsl:text>
+      <!-- <xsl:text>&#xA;</xsl:text> -->
       <xsl:if test="@ElevationMin != '' and @ElevationMax != ''">
         <xsl:value-of select="concat(' * ELEVATION MIN: ', @ElevationMin, ' * ELEVATION MAX: ', @ElevationMax)" />
       </xsl:if>
@@ -402,7 +403,7 @@
         <xsl:value-of select="concat(' * ELEVATION ABSOLUT: ', @ElevationAbsolut)" />
       </xsl:if>
 
-      <xsl:text>&#xA;</xsl:text>
+      <!-- <xsl:text>&#xA;</xsl:text> -->
       <xsl:if test="@DepthMin != '' and @DepthMax != ''">
         <xsl:value-of select="concat(' * DEPTH MIN: ', @DepthMin, ' * DEPTH MAX: ', @DepthMax)" />
       </xsl:if>
@@ -410,7 +411,7 @@
         <xsl:value-of select="concat(' * DEPTH ABSOLUT: ', @DepthAbsolut)" />
       </xsl:if>
 
-      <xsl:text>&#xA;</xsl:text>
+      <!-- <xsl:text>&#xA;</xsl:text> -->
       <xsl:if test="@TimeMin != '' and @TimeMax != ''">
         <xsl:value-of select="concat(' * TIME MIN: ', @TimeMin, ' * TIME MAX: ', @TimeMax)" />
       </xsl:if>
diff --git a/public/prefixes/oai_datacite.xslt b/public/prefixes/oai_datacite.xslt
index aaf01ac..ffd1c40 100644
--- a/public/prefixes/oai_datacite.xslt
+++ b/public/prefixes/oai_datacite.xslt
@@ -82,6 +82,11 @@
                 <xsl:text>Dataset</xsl:text>
                 <!-- <xsl:value-of select="@Type" /> -->
             </resourceType>
+
+            <alternateIdentifiers>
+                <xsl:call-template name="AlternateIdentifier"/>
+            </alternateIdentifiers>
+
             <xsl:if test="Reference">
                 <relatedIdentifiers>
                     <xsl:apply-templates select="Reference" mode="oai_datacite" />
@@ -237,6 +242,17 @@
         </subject>
     </xsl:template>
 
+    <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($repURL, '/dataset/', @Id)" />
+            <xsl:value-of select="$identifier" />
+        </alternateIdentifier >
+    </xsl:template>
+
     <xsl:template match="Reference" mode="oai_datacite" 
         xmlns="http://datacite.org/schema/kernel-4">
         <relatedIdentifier>
@@ -269,7 +285,6 @@
         </contributor>
     </xsl:template>
 
-
     <xsl:template match="PersonAuthor" mode="oai_datacite" 
         xmlns="http://datacite.org/schema/kernel-4">
         <creator>
diff --git a/resources/views/frontend/dataset/show.blade.php b/resources/views/frontend/dataset/show.blade.php
index 34dd615..ed66300 100644
--- a/resources/views/frontend/dataset/show.blade.php
+++ b/resources/views/frontend/dataset/show.blade.php
@@ -113,10 +113,10 @@
                     <p class="dataset__abstract">Size: {{ $dataset->files()->count() }} </p>
 
                     @if($dataset->embargo_date != null)
-                    <p class="dataset__abstract">Datum der Freischaltung:
+                    <p class="dataset__abstract">Embargo-Ende:
                       {{ $dataset->embargo_date->toDateString() }}</p>
                     {{-- @else
-                    <p class="dataset__abstract">Datum der Freischaltung: - </p> --}}
+                    <p class="dataset__abstract">Embargo-Ende: - </p> --}}
                     @endif
 
                     @if($dataset->hasEmbargoPassed() == true)