- Author: Hans-Uwe Erichsen (editor), Dirk Ehlers (editor), Martin Burgi (editor), Dirk Ehlers (editor), Bernd Grzeszick (editor), Elke Gurlit (editor), et al. (editor)
- Language: German
- Year: 2006
- Author: Hans-Uwe Erichsen (editor), Dirk Ehlers (editor), Martin Burgi (editor), Dirk Ehlers (editor), et al. (editor)
- Language: German
- Year: 2010