- Author: Michael Theunissen, Barbara Harshav, Helmut Illbruck
- Language: English
- Year: 2020
- Author: Michael Theunissen
- Language: German
- Year: 1969
- Author: Michael Theunissen
- Language: German
- Year: 1965
- Author: Michael Theunissen
- Language: German
- Year: 1981
- Author: Michael Theunissen
- Language: German
- Year: 1970
- Author: Michael Theunissen
- Language: German
- Year: 1996
- Author: Michael Theunissen
- Language: German
- Year: 1981
- Author: Michael Theunissen
- Language: Spanish
- Year: 2005
- Author: Michael Theunissen
- Language: Spanish
- Year: 2013