- Author: Heribert Hirte, Jean Mohamed, Eberhard Vetter
- Language: German
- Year: 2021
- Author: Holger Fleischer, Klaus Ulrich Schmolke, Karsten Schmidt, Peter M. Huber, Daniel Fröhlich, Harro Otto, Patrick Leyens, Eberhard Vetter, Heribert Hirte, Jean Mohamed
- Language: German
- Year: 2021
- Author: Heribert Hirte, Jean Mohamed, Eberhard Vetter
- Language: German
- Year: 2021