- Author: Günter Scholz, Manuela Gehringer
- Language: German
- Year: 2021
- Author: Günter Scholz, Manuela Gehringer
- Language: German
- Year: 2021
- Author: Scholz G. Gehringer M.
- Language: English
- Year: 2021
- Author: Günter Scholz, Manuela Gehringer
- Language: English
- Year: 2021
- Author: Günter Scholz, Manuela Gehringer
- Language: English
- Year: 2021