- Author: Hans-Joachim Veen, Volkhard Knigge, Ulrich Mählert, Franz-Josef Schlichting
- Language: German
- Year: 2011
- Author: Hermann Weber /Ulrich Mählert (eds.)
- Language: German
- Year: 2001
- Author: Dr. Ulrich Mählert Gerd-Rüdiger Stephan (auth.)
- Language: German
- Year: 1996