- Author: Braun Harald
- Language: German
- Year: 2013
- Author: Dietrich Braun, Harald Cherdron, Matthias Rehahn, Helmut Ritter, Brigitte Voit
- Language: English
- Year: 2006
- Author: Dietrich Braun Harald Cherdron Matthias Rehahn H. Ritter Brigitte Voit
- Language: English
- Year: 2005