- Author: Saied Pirmoradi
- Language: German
- Year: 2012
- Author: Julia Angster
- Language: German
- Year: 2012
- Author: Hans Joachim Marx, Wolfgang Sandberger
- Language: German
- Year: 2013
- Author: Gerhard Hintenberger, Stefan Kühne
- Language: German
- Year: 2009
- Author: Renate Haußmann, Silke Heimes, Petra Rechenberg-Winter
- Language: German
- Year: 2013
- Author: Gunilla Budde, Sebastian Conrad, Oliver Janz
- Language: German
- Year: 2010
- Author: Gabrijela Mecky Zaragoza
- Language: German
- Year: 2012