- Author: Rehm Sven-Volker, Fischer Thomas
- Language: German
- Year: 2017
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- Language: German
- Year: 1991
- Author: Polley Isabel
- Language: German
- Year: 2002
- Author: März Wolfgang
- Language: German
- Year: 2003
- Author: Mellinghoff Georg
- Language: German
- Year: 1988