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- Language: German
- Year: 2011

- Author: Jan Borkowski
- Language: German
- Year: 2011

- Author: Andrea Grimm
- Language: German
- Year: 2011

- Author: Werner H. Engelhardt Hans Raffée Barbara Wischermann
- Language: German
- Year: 2010

- Author: Rainer Steppan Dieter Hofmann
- Language: German
- Year: 2011

- Author: Peter tom Suden
- Language: German
- Year: 2010

- Author: Winfried Prost
- Language: German
- Year: 2009