- Author: Nawratil Heinz, Hauptmann Peter-Helge, Hahn Erik, Hassenpflug Helwig
- Language: German
- Year: 2023
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- Language: German
- Year: 2013
- Author: Hauptmann Peter-Helge, Schwind Hans-Dieter, Hassenpflug Helwig
- Language: German
- Year: 2020
- Author: Bringewat Jörn, Hassenpflug Helwig, Schwind Hans-Dieter
- Language: German
- Year: 2017