- Author: Willeke Caroline
- Language: German
- Year: 1993
- Author: Vierling Michael
- Language: German
- Year: 1996
- Author: Tretter Bertram
- Language: German
- Year: 1974
- Author: Thöne Michael, Jacobs Christian
- Language: German
- Year: 2001
- Author: Thiemer Beate
- Language: German
- Year: 1992
- Author: Mette Wilhelm
- Language: German
- Year: 1956
- Author: Linscheidt Bodo, Truger Achim
- Language: German
- Year: 1995