- Author: Hoffmann Thomas, Balbierz Silke
- Language: German
- Year: 2010
- Author: Balbierz Silke
- Language: German
- Year: 2006
- Author: Balbierz Silke, Weiss Norbert
- Language: German
- Year: 2006
- Author: Balbierz Silke, Weiss Norbert
- Language: German
- Year: 2007