
- Author: Gerd Czycholl (auth.)
- Language: German
- Year: 2008

- Author: Gerd Czycholl (auth.)
- Language: German
- Year: 2016

- Author: Professor Dr. Gerd Czycholl (auth.)
- Language: German
- Year: 2004

- Author: Gerd Czycholl (auth.)
- Language: German
- Year: 2008

- Author: Gerd Czycholl (auth.)
- Language: German
- Year: 2008