- Author: Voigt Dieter, Mertens Lothar
- Language: German
- Year: 1995
- Author: Voigt Dieter, Mertens Lothar
- Language: German
- Year: 1992
- Author: Voigt Dieter, Mertens Lothar
- Language: German
- Year: 1993
- Author: Schäfer Hans-Peter, Sroka Wendelin
- Language: German
- Year: 1998
- Author: Paraskewopoulos Sp.
- Language: German
- Year: 2003
- Author: Paraskewopoulos Spiridon
- Language: German
- Year: 1996
- Author: Paraskewopoulos Spiridon
- Language: German
- Year: 2000
- Author: Paraskewopoulos Spiridon
- Language: German
- Year: 2001
- Author: Mertens Lothar
- Language: German
- Year: 2002