- Author: Matthias Ruffert
- Language: English
- Year: 2013
- Author: Matthias Ruffert Dr., Christian Walter Dr. (editors)
- Language: English
- Year: 2015
- Author: Matthias Ruffert Sebastian Steinecke (auth.)
- Language: English
- Year: 2011
- Author: Matthias Ruffert Sebastian Steinecke (auth.)
- Language: English
- Year: 2011