
- Author: Ulrich Bröckel Willi Meier Gerhard Wagner
- Language: English
- Year: 2013

- Author: Gerhard Wagner
- Language: German
- Year: 2011

- Author: Peter Gostmann Gerhard Wagner (eds.)
- Language: German
- Year: 2008

- Author: Gerhard Wagner
- Language: German

- Author: Gerhard Wagner
- Language: English
- Year: 2006