
- Author: Jochen Vollert
- Language: English
- Year: 2002

- Author: Jochen Vollert
- Language: English
- Year: 2001

- Author: Jochen Vollert
- Language: English
- Year: 2008

- Author: Marsh Gelbart
- Language: German
- Year: 2005

- Author: Alexander Koshchavtsev Jim Kinnear & Fred Koch
- Language: German
- Year: 2009

- Author: Peter Blume
- Language: English
- Year: 2007

- Author: Frank Lobitz
- Language: German, English
- Year: 2006

- Author: Frank Lobitz
- Language: German, English
- Year: 2006