- Author: Klein Eckart
- Language: German
- Year: 1994
- Author: Kamps Hans
- Language: German
- Year: 1981
- Author: Schneider Hans K.
- Language: German
- Year: 1968
- Author: Jordan Malte
- Language: German
- Year: 2005
- Author: Jesse Lenhard
- Language: German
- Year: 1992
- Author: Heckel Katharina
- Language: German
- Year: 1998