- Author: Gerhard Maier
- Language: German
- Year: 2023
- Author: Gerhard Maier
- Language: German
- Year: 2015
- Author: Gerhard Maier
- Language: German
- Year: 2014
- Author: Helmut Burkhardt Fritz Grünzweig Fritz Laubach Gerhard Maier (edd.)
- Language: Italian
- Year: 2005
- Author: Gerhard Maier (Hg.)
- Language: German
- Year: 1986
- Author: Helmut Burkhardt Fritz Grünzweig Fritz Laubach Gerhard Maier
- Language: German
- Year: 2009
- Author: Helmut Burkhardt Fritz Grünzweig Fritz Laubach Gerhard Maier
- Language: German
- Year: 2009