- Author: Berthold Block
- Language: German
- Year: 2003
- Author: Steiner Horst
- Language: German
- Year: 2008
- Author: Baier Peter M., Sohn Christof, Vetter Klaus, Voigt Hans-Joachim
- Language: English, German
- Year: 2004
- Author: Eigler Andreas, Maier Albert
- Language: German
- Year: 2016