- Author: Lageman Bernhard, Schmidt Christoph M., Engel Dirk, Rothgang Michael
- Language: German
- Year: 2008
- Author: Dehio Jochen, Döhrn Roland, Graskamp Rainer, Löbbe Klaus, Loeffelholz Hans Dietrich von, Moos Waike, Rothgang Michael
- Language: German
- Year: 2003