diff --git a/public/content/content.json b/public/content/content.json
index 87ed4998e7010b9daf2b150847b2aafd14891e70..97baa62df6c3ef23dc24f92e229991873e81d7ea 100644
--- a/public/content/content.json
+++ b/public/content/content.json
@@ -235,5 +235,53 @@
       "project":"https://www.hft-stuttgart.de/forschung/projekte/aktuell/ensource-2-foerderphase"
     },
     "refIndex": 3
+  },
+  {
+    "item": {
+      "title": "Quality ADE for CityGML",
+      "project": "CityDoctor2",
+      "author": {
+        "firstName": "Matthias",
+        "lastName": "Betz",
+        "hftURL": "https://www.hft-stuttgart.de/p/matthias-betz"
+      },
+      "project_year_start": "2019",
+      "project_year_end": "2021",
+      "project_is_on_going": true,
+      "imageLink":"imgs/thumbnails/QualityADE_Icon.png",
+      "keywords":["ADE", "CityGML", "Quality"],
+      "description_en":"This ADE enables the storage of validation data in CityGML files themselves. It can be used to improve CityGML file generation or simulation applications.",
+      "description_de":"Die Erweiterung ermöglicht die Speicherung von Validierungsdaten in CityGML Dateien. Die Validierungsdaten können verwendet werden um die Generierung von CityGML Dateien oder Ergebnisse von Simulationen zu verbessern."
+    },
+    "links": {
+      "demo": "",
+      "publication":"",
+      "project":"https://transfer.hft-stuttgart.de/gitlab/citydoctor/qualityade"
+    },
+    "refIndex": 6
+  },
+  {
+    "item": {
+      "title": "CityDoctor2",
+      "project": "CityDoctor2",
+      "author": {
+        "firstName": "Matthias",
+        "lastName": "Betz",
+        "hftURL": "https://www.hft-stuttgart.de/p/matthias-betz"
+      },
+      "project_year_start": "2019",
+      "project_year_end": "2021",
+      "project_is_on_going": true,
+      "imageLink":"imgs/thumbnails/CityDoctorScreen.png",
+      "keywords":["Quality", "Validation", "Repairing", "Healing"],
+      "description_en":"CityDoctor2 is able to validate CityGML files for their geometric and semantic correctness and writing the results in CityGML back or write reports in different file formats. It is also capable of repairing some more common errors in geometries.",
+      "description_de":"CityDoctor2 is in der Lage CityGML Dateien auf ihre geometrische und sematische Korrektheit zu überprüfen. Die Ergebnisse können zurück in die CityGML Datei oder in seperate Report Dateien geschrieben werden. CityDoctor2 kann zum Teil häufig vorkommende geometrische Fehler automatisch reparieren."
+    },
+    "links": {
+      "demo": "",
+      "publication":"https://doi.org/10.1007/s41064-020-00094-0",
+      "project":"https://projekt.beuth-hochschule.de/citydoctor2/"
+    },
+    "refIndex": 7
   }
 ]
diff --git a/public/imgs/thumbnails/CityDoctorScreen.png b/public/imgs/thumbnails/CityDoctorScreen.png
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diff --git a/public/imgs/thumbnails/QualityADE_Icon.png b/public/imgs/thumbnails/QualityADE_Icon.png
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