− | * [[Workshop Karlsruhe 2017]] - (2017-01) 2nd International SIG 3D and OGC Workshop on CityGML UtilityNetworksADE for a data model for utility networks. | + | * [[Workshop Karlsruhe 2017]] - (2017-03) 2nd International SIG 3D and OGC Workshop on CityGML UtilityNetworksADE for a data model for utility networks. |