
- Author: Dieu Éric
- Language: французский
- Year: 2022

- Author: Gerhard Köbler
- Language: German
- Year: 2007

- Author: Gerhard Köbler
- Language: Bulgarian, German
- Year: 2006

- Author: Gerhard Köbler
- Language: German, Bulgarian
- Year: 2006

- Author: Angelo Mercado
- Language: English
- Year: 2012

- Author: Tischler J.
- Language: German
- Year: 2010

- Author: Tischler J.
- Language: German
- Year: 1983

- Author: Tischler J.
- Language: German
- Year: 2000

- Author: Tischler J.
- Language: German
- Year: 1991

- Author: Anne Potthoff
- Language: German
- Year: 1992