- Author: Ulrich Barth (editor), Claus-Dieter Osthövener (editor)
- Language: German
- Year: 2000
- Author: Niels Jørgen Cappelørn (editor), Richard E. Crouter (editor), Theodor Jørgensen (editor), Claus-Dieter Osthövener (editor)
- Language: German
- Year: 2006