- Author: Christof Marte
- Language: German
- Year: 2003
- Author: Kathy Hennig, Lars Ihring, Michael Papendieck
- Language: German
- Year: 2010
- Author: Uwe Koch, Dirk Otto, Mark Rüdlin
- Language: German
- Year: 2011
- Author: Markus Botzek, Karola Richter
- Language: German
- Year: 2012
- Author: Hans-Peter Schaub
- Language: German
- Year: 2011
- Author: Andreas Asanger
- Language: German
- Year: 2012
- Author: Maike Jarsetz
- Language: German
- Year: 2010
- Author: Sibylle Mühlke
- Language: German
- Year: 2010