UML Diagrams (v2.1)
FWEBuilding - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWEBuilding/v2.1/UML/
FWELanduse - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWELanduse/v2.1/UML/
FWEArea - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWEArea/v2.1/UML/
FWESystem - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWESystem/v2.1/UML/
XSD Files (v2.1)
FWEBuilding - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWEBuilding/v2.1/XSD/FWEBuilding.xsd
FWELanduse - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWELanduse/v2.1/XSD/FWELanduse.xsd
FWEArea - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWEArea/v2.1/XSD/FWEArea.xsd
FWESystem - https://transfer.hft-stuttgart.de/pages/in-source/fwe-ade/FWESystem/v2.1/XSD/FWESystem.xsd
CityGML FWE ADE UML Documentation (v2.1)