diff --git a/.github/workflows/GHPagesOntology.yml b/.github/workflows/GHPagesOntology.yml
index 72237c3a5..058d0d514 100644
--- a/.github/workflows/GHPagesOntology.yml
+++ b/.github/workflows/GHPagesOntology.yml
@@ -1,37 +1,40 @@
 name: Deploy
 
+env:
+  ONTOLOGY_FILE_NAME: lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.ttl
+  
 on:
-  workflow_dispatch:
-    inputs:
-      ontology_path:
-        description: 'Relative path to the ontology file'
-        required: true
-        default: 'lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.owl'
-
+    workflow_dispatch:
+    
 jobs:
   deploy:
     runs-on: ubuntu-latest
+    if: github.ref_name == 'main'
     steps:
+    ## First step: Checkout main from the repository
     - uses: actions/checkout@v3
       with:
-        path: repo
-
-    - name: Install dependencies
-      run: |
-           pip install rdflib
-           wget -O widoco.jar https://github.com/dgarijo/Widoco/releases/download/v1.4.17/java-11-widoco-1.4.17-jar-with-dependencies.jar
-
+        path: deploy_main
+    ## Second step: Use the get_ontoversion tool to get the current ontology version published in main
+    ## Usage of get_ontoversionversion.py:
+    ##   python get_ontoversionversion.py [-l L]
+    ##     -l L    Location of the ontology file
+    ##             default: main/ontology.ttl
     - name: Get ontology version
       run: |
-           echo "ONTOLOGY_FILE_PATH=${{ github.event.inputs.ontology_path }}"
-           echo "ONTO_VERSION=$(python repo/.github/workflows/get_ontoversion.py $ONTOLOGY_FILE_PATH)" >> "$GITHUB_ENV"
-
-    - name: Build HTML for ontology
+           pip install rdflib
+           echo "ONTO_VERSION=$(python deploy_main/.github/workflows/get_ontoversion.py deploy_main/$ONTOLOGY_FILE_NAME)" >> "$GITHUB_ENV"
+    ## Third step: Build HTML and ontology serializations for the current version
+    - name: Build HTML for main
       run: | 
-           mkdir -p public/v$ONTO_VERSION
-           java -jar widoco.jar -ontFile $ONTOLOGY_FILE_PATH -outFolder public/v$ONTO_VERSION -htaccess -uniteSections -includeAnnotationProperties -lang en-de -getOntologyMetadata -noPlaceHolderText -rewriteAll -webVowl
+           wget -O widoco.jar https://github.com/dgarijo/Widoco/releases/download/v1.4.17/java-11-widoco-1.4.17-jar-with-dependencies.jar
+           mkdir public 
+           mkdir public/v$ONTO_VERSION
+           java -jar widoco.jar -ontFile deploy_main/$ONTOLOGY_FILE_NAME -outFolder public/v$ONTO_VERSION -htaccess -uniteSections -includeAnnotationProperties -lang en-de -getOntologyMetadata -noPlaceHolderText -rewriteAll -webVowl
            cp public/v$ONTO_VERSION/index-en.html public/v$ONTO_VERSION/index.html
-
+    ## Fourth step: Publish HTML docs and ontology serializations to gh pages
+    ##              maintaining other versions and
+    ##              replacing the current version (if existing)
     - name: Deploy to GitHub Pages
       if: success()
       uses: crazy-max/ghaction-github-pages@v3
@@ -40,4 +43,4 @@ jobs:
         build_dir: public
         keep_history: true
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
\ No newline at end of file
diff --git a/lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.owl b/lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.ttl
similarity index 99%
rename from lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.owl
rename to lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.ttl
index 9287deab9..3acf8b7a7 100644
--- a/lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.owl
+++ b/lebedigital/ConcreteOntology/BaseOntology/ConcreteProductionAndTestingOntology.ttl
@@ -13,6 +13,7 @@
                          dcterms:title "Concrete Production and Testing Ontology"@en ;
                          dcterms:creator "Mattheo Krüger, Melissa Telong Donfack, Aida Zoriyatkha, Birgit Meng, Stephan Pirskawetz" ,
 						<https://orcid.org/0009-0003-7121-0283> ,
+						<https://orcid.org/0009-0006-4524-9143> ,
 						<https://orcid.org/0009-0004-9700-2439> ,
 						<https://orcid.org/0000-0003-2445-6734> ,
 						<https://orcid.org/0000-0003-0626-5002> ;