- Author: Thomas Klein (editor) Ivo Ritzer (editor) Peter W. Schulze (editor)
- Language: German
- Year: 2015
- Author: Thomas Klein, Joachim Bumke, Barbara Kronsfoth, Angela Mielke-Vandenhouten
- Language: German
- Year: 1997
- Author: Hermann Paul, Thomas Klein, Hans-Joachim Solms, Klaus-Peter Wegera, Ingeborg Schöbler, Heinz-Peter Prell
- Language: German
- Year: 2007
- Author: Thomas Klein, Hans-Joachim Solms, Klaus-Peter Wegera
- Language: German
- Year: 2017
- Author: Thomas Klein
- Language: German
- Year: 2012
- Author: Thomas Klein Hans-Joachim Solms Klaus-Peter Wegera
- Language: German
- Year: 2009
- Author: Thomas Klein Hans-Joachim Solms Klaus-Peter Wegera
- Language: German
- Year: 2018