- Author: Guido Christensen, Andreas Fuchs, Mathias Habersack, Harry Schmidt, Alexander Witt
- Language: German
- Year: 2010
- Author: Stefan Behling, Christian Brensing, Andreas Fuchs, Christoph Ingenhoven
- Language: English
- Year: 2013
- Author: Stefan Behling, Christian Brensing, Andreas Fuchs, Christoph Ingenhoven
- Language: German
- Year: 2009
- Author: Marcus Bieder, Guido Christensen, Stefan Ernst, Andreas Fuchs, Mathias Habersack, Carsten Schäfer, Harry Schmidt, Alexander Witt
- Language: German
- Year: 2016
- Author: Stefan Behling, Christian Brensing, Andreas Fuchs, Christoph Ingenhoven
- Language: English
- Year: 2013
- Author: Andreas Fuchs (auth.)
- Language: German
- Year: 2000
