- Author: Volker Gerhardt
- Language: German
- Year: 2021
- Author: Gerhardt Volker, Mehring Reinhard, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2010
- Author: Gerhardt Volker, Mehring Reinhard, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2008
- Author: Gerhardt Volker, Mehring Reinhard, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara, Hansen Hendrik, Veen Hans-Joachim
- Language: German
- Year: 2009
- Author: Gerhardt Volker, Krawietz Werner
- Language: German
- Year: 1992
- Author: Gerhardt Volker, Kauffmann Clemens, Kraus Hans-Christof, Mehring Reinhard, Nitschke Peter, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2014
- Author: Gerhardt Volker, Kauffmann Clemens, Kraus Hans-Christof, Kroll Frank-Lothar, Nitschke Peter, Ottmann Henning, Thompson Martyn P.
- Language: German
- Year: 2018