- Author: Dominik Büschken, Alheydis Plassmann
- Language: German
- Year: 2020
- Author: Alheydis Plassmann, Dominik Büschken
- Language: German
- Year: 2019
- Author: Matthias Becher, Alheydis Plassmann
- Language: German
- Year: 2011
- Author: Alheydis Plassmann
- Language: German
- Year: 2006
- Author: Alheydis Plassmann
- Language: German
- Year: 2006