- Author: Myronn Hardy
- Language: English
- Year: 2023
- Author: Anne Uhrmacher
- Language: German
- Year: 2023
- Author: Anne Uhrmacher
- Language: German
- Year: 2023
- Author: Weiß Siegfried
- Language: German
- Year: 1971
- Author: Tolksdorf Norbert
- Language: German
- Year: 2002
- Author: Seibert Thomas-M.
- Language: German
- Year: 1996
- Author: Schwager Elke
- Language: German
- Year: 2008
- Author: Saager Stefan
- Language: German
- Year: 2007