- Author: Dieter Muhs Herbert Wittel Manfred Becker (auth.)
- Language: German
- Year: 1993
- Author: Dieter Muhs Herbert Wittel Manfred Becker (auth.)
- Language: German
- Year: 1994
- Author: Wilhelm Matek Dieter Muhs Herbert Wittel Manfred Becker (auth.)
- Language: German
- Year: 1994