- Author: Berghaus Alexander, Rettinger Gerhard, Böhme Gerhard
- Language: German
- Year: 1996
- Author: Theissing Jürgen, Werner Jochen A., Hoppe Florian, Rettinger Gerhard, Rudack Claudia
- Language: English, German
- Year: 2011
- Author: Alexander Berghaus Gerhard Rettinger Gerhard Böhme
- Language: German
- Year: 1996