- Author: Jörg Schmitt-Kilian und Andreas Niedrig
- Language: German
- Year: 2016
- Author: Werner Maser
- Language: German
- Year: 1983
- Author: Abdallah Frangi
- Language: German
- Year: 2012
- Author: Reinhard Müller-Mehlis
- Language: German
- Year: 1976
- Author: Dürwald Wolfgang
- Language: German
- Year: 2002
- Author: Maria Treben
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- Year: 1990
- Author: Wilhelm Henning (Hrsg.)
- Language: German
- Year: 1982
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- Language: German
- Year: 1977
- Author: Egbert Kieser
- Language: German
- Year: 1984
- Author: Wolfram zu Mondfeld
- Language: German
- Year: 1980