- Author: Naciye Akca, Stephan Zelewski, Matthias Klumpp
- Language: English
- Year: 2015
- Author: Stephan Zelewski (auth.)
- Language: German
- Year: 1993
- Author: Stephan Zelewski (auth.)
- Language: German
- Year: 1989
- Author: Roger Erb Stephan Zelewski
- Language: German
- Year: 1985