diff --git a/app/Http/Controllers/Frontend/SitelinkController.php b/app/Http/Controllers/Frontend/SitelinkController.php
index 43ffb91..bf64b47 100644
--- a/app/Http/Controllers/Frontend/SitelinkController.php
+++ b/app/Http/Controllers/Frontend/SitelinkController.php
@@ -50,7 +50,7 @@ class SitelinkController extends Controller
                 ->whereYear('server_date_published', '>=', $from)
                 ->whereYear('server_date_published', '<', $until);
 
-            $documents = $select
+            $documents = $select->orderBy('publish_id', 'asc')
                 ->get();
 
             //$this->years = Dataset::select(DB::raw('YEAR(server_date_modified) as server_date_modified'))
diff --git a/app/Http/Controllers/Oai/RequestController.php b/app/Http/Controllers/Oai/RequestController.php
index 4e518ff..03fe76b 100644
--- a/app/Http/Controllers/Oai/RequestController.php
+++ b/app/Http/Controllers/Oai/RequestController.php
@@ -187,7 +187,8 @@ class RequestController extends Controller
         $dataset = null;
         try {
             //$dataset = new Opus_Document($docId);
-            $dataset = Dataset::findOrFail($dataId);
+            //$dataset = Dataset::findOrFail($publishId);
+            $dataset = Dataset::where('publish_id', '=', $dataId)->firstOrFail();
         } catch (ModelNotFoundException $ex) {
             throw new OaiModelException(
                 'The value of the identifier argument is unknown or illegal in this repository.',
@@ -406,7 +407,7 @@ class RequestController extends Controller
             }
             
             $totalIds = $finder->count();
-            $reldocIds = $finder->pluck('id')->toArray();
+            $reldocIds = $finder->orderBy('publish_id')->pluck('publish_id')->toArray();
         }
 
         // handling of document ids
@@ -414,7 +415,8 @@ class RequestController extends Controller
         $workIds = array_splice($restIds, 0, $maxRecords);
         //foreach ($datasets as $dataset)
         foreach ($workIds as $dataId) {
-            $dataset = Dataset::findOrFail($dataId);
+            //$dataset = Dataset::findOrFail($dataId);
+            $dataset = Dataset::where('publish_id', '=', $dataId)->firstOrFail();
             $this->createXmlRecord($dataset);
         }
 
@@ -463,7 +465,7 @@ class RequestController extends Controller
         //$node = $this->xml->createElement('Rdr_Dataset');
         $domNode = $this->getDatasetXmlDomNode($dataset);
         // add frontdoor url
-        $this->addLandingPageAttribute($domNode, $dataset->id);
+        $this->addLandingPageAttribute($domNode, $dataset->publish_id);
 
         // add access rights to element
         //$this->_addAccessRights($domNode, $dataset);
diff --git a/composer.lock b/composer.lock
index cfcfb04..e30261f 100755
--- a/composer.lock
+++ b/composer.lock
@@ -1577,16 +1577,16 @@
         },
         {
             "name": "opis/closure",
-            "version": "3.5.2",
+            "version": "3.5.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/opis/closure.git",
-                "reference": "2e3299cea6f485ca64d19c540f46d7896c512ace"
+                "reference": "cac47092144043d5d676e2e7cf8d0d2f83fc89ca"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/opis/closure/zipball/2e3299cea6f485ca64d19c540f46d7896c512ace",
-                "reference": "2e3299cea6f485ca64d19c540f46d7896c512ace",
+                "url": "https://api.github.com/repos/opis/closure/zipball/cac47092144043d5d676e2e7cf8d0d2f83fc89ca",
+                "reference": "cac47092144043d5d676e2e7cf8d0d2f83fc89ca",
                 "shasum": ""
             },
             "require": {
@@ -1634,7 +1634,7 @@
                 "serialization",
                 "serialize"
             ],
-            "time": "2020-05-21T20:09:36+00:00"
+            "time": "2020-05-25T09:32:45+00:00"
         },
         {
             "name": "paragonie/random_compat",
diff --git a/public/datasetxml2oai-pmh.xslt b/public/datasetxml2oai-pmh.xslt
index d2ba5d5..ee65f64 100644
--- a/public/datasetxml2oai-pmh.xslt
+++ b/public/datasetxml2oai-pmh.xslt
@@ -264,7 +264,7 @@
         <xsl:text>oai:</xsl:text>
         <xsl:value-of select="$repIdentifier" />
         <xsl:text>:</xsl:text>
-        <xsl:value-of select="@Id" />
+        <xsl:value-of select="@PublishId" />
       </identifier>
       <datestamp>
         <xsl:choose>
diff --git a/public/prefixes/oai_datacite.xslt b/public/prefixes/oai_datacite.xslt
index 7198db4..4857f1b 100644
--- a/public/prefixes/oai_datacite.xslt
+++ b/public/prefixes/oai_datacite.xslt
@@ -47,7 +47,7 @@
                 <xsl:text>oai:</xsl:text>
                 <xsl:value-of select="$repIdentifier" />
                 <xsl:text>:</xsl:text>
-                <xsl:value-of select="@Id" />
+                <xsl:value-of select="@PublishId" />
             </identifier>
             <!--<datacite:creator>-->
             <creators>
@@ -248,8 +248,8 @@
             <xsl:attribute name="alternateIdentifierType">
                 <xsl:text>url</xsl:text>
             </xsl:attribute>
-            <xsl:variable name="identifier" select="concat($repURL, '/dataset/', @Id)" />
-            <xsl:value-of select="$identifier" />
+            <!-- <xsl:variable name="identifier" select="concat($repURL, '/dataset/', @Id)" /> -->
+           <xsl:value-of select="@landingpage"/>
         </alternateIdentifier >
     </xsl:template>
 
diff --git a/resources/views/frontend/dataset/show.blade.php b/resources/views/frontend/dataset/show.blade.php
index 3715f6b..683ddef 100644
--- a/resources/views/frontend/dataset/show.blade.php
+++ b/resources/views/frontend/dataset/show.blade.php
@@ -151,7 +151,7 @@
 
                   <div class="tab-pane content-technical-metadata" id="three">
                     <p class="dataset__abstract">Persistenter Identifikator:
-                      {{ "https://www.tethys.at/dataset/" . $dataset->id }}</p>
+                      {{ "https://www.tethys.at/dataset/" . $dataset->publish_id }}</p>
                     <p class="dataset__abstract">Status: {{ $dataset->server_state }}</p>
                     <p class="dataset__abstract">Eingestellt von: {{ $dataset->user->login }}</p>
                     <p class="dataset__abstract">Erstellt am: {{ $dataset->created_at->toDateString() }}</p>
diff --git a/resources/views/frontend/sitelink/index.blade.php b/resources/views/frontend/sitelink/index.blade.php
index a5079d2..19d1f6e 100644
--- a/resources/views/frontend/sitelink/index.blade.php
+++ b/resources/views/frontend/sitelink/index.blade.php
@@ -23,7 +23,7 @@
                             <div class="post">
                                 <header class="post-header">
                                     <h2 class="post-title">
-                                        <a href="{{ URL::route('frontend.dataset.show',['id' =>$document->id]) }}"><?= $document->type;  $document->id; ?>
+                                        <a href="{{ URL::route('frontend.dataset.show',['id' =>$document->publish_id]) }}"><?= $document->type;  $document->publish_id; ?>
                                         </a>
                                     </h2>
                                 </header>