- Author: Friedrich Vollhardt
- Language: German
- Year: 2016
- Author: Elisabeth Décultot, Friedrich Vollhardt (Hg.)
- Language: German
- Year: 2015
- Author: Denis Thouard (editor), Friedrich Vollhardt (editor), Fosca Mariani Zini (editor)
- Language: German
- Year: 2010
- Author: Jan-Dirk Müller (editor), Wulf Oesterreicher (editor), Friedrich Vollhardt (editor)
- Language: German
- Year: 2010
- Author: Lutz Danneberg (editor), Sandra Pott (editor), Jörg Schönert (editor), Friedrich Vollhardt (editor)
- Language: German
- Year: 2002
- Author: Frank Grunert (editor), Friedrich Vollhardt (editor)
- Language: German
- Year: 2007