- Author: Stefan Kiener, Nicolas Maier-Scheubeck, Robert Obermaier, Manfred Weiß
- Language: German
- Year: 2017
- Author: Stefan Kiener, Nicolas Maier-Scheubeck, Robert Obermaier, Manfred Weiß
- Language: German
- Year: 2012
- Author: Andreas Otto, Robert Obermaier
- Language: German
- Year: 2007