- Author: Georg Schöllgen
- Language: German
- Year: 2016
- Author: Georg Schöllgen
- Language: German
- Year: 2015
- Author: Georg Schöllgen
- Language: German
- Year: 2013
- Author: Georg Schöllgen
- Language: German
- Year: 2012
- Author: Georg Schöllgen
- Language: German
- Year: 2010
- Author: Georg Schöllgen
- Language: German
- Year: 2008
- Author: Georg Schöllgen
- Language: German
- Year: 2006
- Author: Georg Schöllgen
- Language: German
- Year: 2004
- Author: Nordrhein-westfälische Akademie der Wissenschaften. (editor), Georg Schöllgen (editor)
- Language: German
- Year: 2003