- Author: Jürgen Hardt, Fritz Mattejat, Thomas Merz, Ulrich Müller, Matthias Ochs, Marion Schwarz
- Language: German
- Year: 2010
- Author: Thomas Merz
- Language: English
- Year: 1998
- Author: Thomas Merz
- Language: English
- Year: 1998
- Author: Thomas Merz
- Language: German
- Year: 2001