- Author: Simonetta Sanna
- Language: German
- Year: 1988
- Author: Bernhard Sorg
- Language: German
- Year: 1989
- Author: Malgorzata Swiderska
- Language: German
- Year: 1989
- Author: Ludwig Uhlig
- Language: German
- Year: 1975
- Author: Wolfgang Mohr, Walter Haug
- Language: German
- Year: 1977
- Author: Sabine Schormann
- Language: German
- Year: 1993