- Author: Klaus Schreiner, Gerd Schwerhoff, Gabriela Signori
- Language: German
- Year: 2011
- Author: Michael Heymel
- Language: German
- Year: 1988
- Author: Christoph Schneider-Harpprecht
- Language: German
- Year: 2001
- Author: Horst Weigelt
- Language: German
- Year: 2001
- Author: Bodo Zelinsky
- Language: German
- Year: 2012
- Author: Annemarie Weber
- Language: German
- Year: 2010
- Author: Christian Halbrock
- Language: German
- Year: 2014