- Author: David Flanagan
- Language: German
- Year: 2012
- Author: Stubblebine Tony
- Language: English
- Year: 2013
- Author: Jander Johannes, Passig Kathrin
- Language: German
- Year: 2011
- Author: Jander Johannes, Passig Kathrin
- Language: German
- Year: 2011
- Author: Jander Johannes, Passig Kathrin
- Language: German
- Year: 2011