- Author: Gabriele Kalmbach
- Language: German
- Year: 2002
- Author: Dietrich Haubold Andreas Haubold
- Language: German
- Year: 2005
- Author: Bob Ordish
- Language: English
- Year: 2005
- Author: Jürgen Salzer
- Language: German
- Year: 2004
- Author: Monika Heyder
- Language: German
- Year: 2005
- Author: Doris Werner-Ulrich
- Language: German
- Year: 2001
- Author: O'Niel V. Som
- Language: German
- Year: 2004
- Author: Lars Kabel
- Language: German
- Year: 2002
- Author: Christoph Friedrich
- Language: German
- Year: 2003
