- Author: Michelle Corrodi, Klaus Spechtenhauser, Gerhard Auer
- Language: German
- Year: 2008
- Author: Michelle Corrodi, Klaus Spechtenhauser, Gerhard Auer
- Language: English
- Year: 2008
- Author: Michelle Corrodi Klaus Spechtenhauser
- Language: English
- Year: 2008
- Author: Klaus Spechtenhauser, Michelle Corrodi, Gerhard Auer
- Language: English
- Year: 2008