
- Author: Eugen Müller (editor) Josef Houben Theodor Weyl
- Language: German
- Year: 1975

- Author: Eugen Müller (editor) Josef Houben Theodor Weyl
- Language: German
- Year: 1971

- Author: Eugen Müller (editor) Josef Houben Theodor Weyl
- Language: German
- Year: 1975

- Author: Eugen Müller (editor) Josef Houben Theodor Weyl
- Language: German
- Year: 1959