- Author: Hans Hintzen Hans Laufenberg Wilhelm Matek Dieter Muhs Herbert Wittel (auth.)
- Language: German
- Year: 1987
- Author: Hermann Roloff Wilhelm Matek (auth.)
- Language: German
- Year: 1972
- Author: Wilhelm Matek Dieter Muhs Herbert Wittel Manfred Becker (auth.)
- Language: German
- Year: 1994
- Author: Hans Hintzen Hans Laufenberg Wilhelm Matek Dieter Muhs Herbert Wittel (auth.)
- Language: German
- Year: 1989
- Author: Hermann Roloff Wilhelm Matek (auth.)
- Language: German
- Year: 1976