- Author: Dietrich Braun, Harald Cherdron, Matthias Rehahn, Helmut Ritter, Brigitte Voit
- Language: English
- Year: 2006
- Author: Matthias Rehahn, Wayne L Mattice, U Suter
- Language: English
- Year: 1997
- Author: Dietrich Braun Harald Cherdron Matthias Rehahn H. Ritter Brigitte Voit
- Language: English
- Year: 2005