| ... | ... | @@ -74,6 +74,6 @@ In CityGML 3.0, only the UML model is defined in the conceptual model standard d |
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[OGC City Geography Markup Language (CityGML) Part 1: Conceptual Model Standard, OGC document 20-010](https://docs.ogc.org/is/20-010/20-010.html)
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[Kutzner, T., Chaturvedi, K. & Kolbe, T.H. CityGML 3.0: New Functions Open Up New Applications. PFG 88, 43–61 (2020). https://doi.org/10.1007/s41064-020-00095-z](https://doi.org/10.1007/s41064-020-00095-z)
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[Kutzner, T., Chaturvedi, K. & Kolbe, T.H. CityGML 3.0: New Functions Open Up New Applications. PFG 88, 43–61 (2020)](https://doi.org/10.1007/s41064-020-00095-z)
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[^1]: [OGC City Geography Markup Language (CityGML) 3.0 Conceptual Model Users Guide, OGC document 20-066](http://www.opengis.net/doc/UG/CityGML-user-guide/3.0) |
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