- Author: Christian Schulte, Winfried Siebers, Valentin Mertes, Stefanie Schmitt
- Language: German
- Year: 2016
- Author: Richard Langston, Gunther Martens, Vincent Pauval, Christian Schulte, Rainer Stollmann
- Language: German
- Year: 2015
- Author: Christian Schulte, Birgit Haberpeuntner, Melanie Konrad
- Language: German
- Year: 2022
- Author: Richard Langston, Gunther Martens, Vincent Pauval, Christian Schulte, Rainer Stollmann
- Language: German
- Year: 2014
- Author: Richard Langston, Gunther Martens, Vincent Pauval, Christian Schulte, Rainer Stollmann
- Language: German
- Year: 2015
- Author: Richard Langston, Gunther Martens, Vincent Pauval, Christian Schulte, Rainer Stollmann
- Language: German
- Year: 2015
- Author: Bischoff Christian, Schulte-Mattler Wilhelm J., Conrad Bastian
- Language: German
- Year: 2009
- Author: Christian Schulte
- Language: english
- Year: 2002