- Author: Claus Stickler (auth.)
- Language: German
- Year: 2000
- Author: Daniel Stelter (auth.)
- Language: German
- Year: 1991
- Author: Thomas von Lingen (auth.)
- Language: German
- Year: 1993
- Author: Uwe Götze (auth.)
- Language: German
- Year: 1993
- Author: Uwe Hoppe (auth.)
- Language: German
- Year: 2000
- Author: Ralf Schellhase (auth.)
- Language: German
- Year: 2000
- Author: Stefan Eckhardt (auth.)
- Language: German
- Year: 2002
- Author: Regina Hauser (auth.)
- Language: German
- Year: 2003