- Author: Ludwig Schlesinger
- Language: German
- Year: 1922
- Author: Dyer R.H. Edmunds D.E.
- Language: English
- Year: 2014
- Author: Schmeisser Gerhard, Rahman Qazi Ibadur
- Language: English
- Year: 2002
- Author: Paraskevas Alvanos
- Language: English
- Year: 2015
- Author: Osgood William Fogg
- Language: English
- Year: 1966
- Author: Morse Marston
- Language: English
- Year: 1947
- Author: Phillips E. G
- Language: English
- Year: 1966