- Author: Gerhard Altvater, Christoph Coen, Christoph Krehl, et al.
- Language: German
- Year: 2022
- Author: Christoph Barthe, Christoph Coen, Tobias Engelstätter, et al.
- Language: German
- Year: 2020
- Author: Christoph Barthe, Christoph Coen, Tobias Engelstätter, et al.
- Language: German
- Year: 2020
- Author: Gerhard Altvater, Christoph Coen, Christoph Krehl, et al.
- Language: German
- Year: 2022