- Author: Kauffmann Clemens
- Language: German
- Year: 2000
- 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
- Author: Gerhardt Volker, Kauffmann Clemens, Kraus Hans-Christof, Mehring Reinhard, Nitschke Peter, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2016
- Author: Gerhardt Volker, Kauffmann Clemens, Kraus Hans-Christof, Kroll Frank-Lothar, Nitschke Peter, Ottmann Henning, Thompson Martyn P.
- Language: German
- Year: 2017
- Author: Gerhardt Volker, Kauffmann Clemens, Kraus Hans-Christof, Mehring Reinhard, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2013
- Author: Gerhardt Volker, Kauffmann Clemens, Kraus Hans-Christof, Mehring Reinhard, Ottmann Henning, Thompson Martyn P., Zehnpfennig Barbara
- Language: German
- Year: 2012