- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 2010
- Author: Jürgen Stoffregen
- Language: German
- Year: 2018
- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 2012
- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 1996
- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 1995
- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 2004
- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 2001
- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 1998
- Author: Jürgen Stoffregen (auth.)
- Language: German
- Year: 2010