- Author: Christian Koch
- Language: German
- Year: 2019
- Author: Hend Gilli-Elewy
- Language: German
- Year: 2001
- Author: Alexander Schauer
- Language: German
- Year: 2019
- Author: Mohammad M. A. Saflo
- Language: English
- Year: 2001
- Author: Ahmad M. Al-Dubayan
- Language: German
- Year: 2001
- Author: Florian Schwarz
- Language: German
- Year: 2019
- Author: Carsten Hock
- Language: German
- Year: 2000
- Author: Andreas Drechsler
- Language: German
- Year: 2000