- Author: Sherborn Charles Davies
- Language: English
- Year: 2016
- Author: Jürgen Ott
- Language: English
- Year: 2010
- Author: Friedhelm Krupp Lytton J. Musselman Mohammed M.A. Kotb Ilka Weidig
- Language: English
- Year: 2009
- Author: C. Scholtz A. Davis U. Kryger
- Language: English
- Year: 2009