- Author: Bayer Michael, Darwin John, Juraschitz Norbert
- Language: German
- Year: 2017
- Author: Bayer Michael, Piccard Bertrand
- Language: German
- Year: 2015
- Author: Bayer Michael, Heinemann Enrico, Hirsi Ali Ayaan, Schnitzler Eva-Maria
- Language: German
- Year: 2015