- Author: Karlheinz Lohs, Gerhard W. Fischer, Woligang Dedek
- Language: German
- Year: 1977
- Author: Karlheinz Lohs, Gerhard W. Fischer, Wolfgang Dedek
- Language: German
- Year: 1977
- Author: Ivo W. Molenaar (auth.) Gerhard H. Fischer Ivo W. Molenaar (eds.)
- Language: English
- Year: 1995