- Author: Gerhardt Volker, Kauffmann Clemens, Kraus Hans-Christof, Mehring Reinhard, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2012
- Author: Ballestrem Karl Graf, Gerhardt Volker, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2007
- Author: Ballestrem Karl Graf, Gerhardt Volker, Ottmann Henning, Thompson Martyn P.
- Language: German
- Year: 2004
- Author: Ballestrem Karl Graf, Gerhardt Volker, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2006