- 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: Peter M. Huber, Daniel Fröhlich
- Language: German
- Year: 2014
- Author: Peter M. Huber, Daniel Fröhlich
- Language: German
- Year: 2014