- Author: Heinrich Semler Otto Warbug M. Busemann Richard Hindorf (ed.)
- Language: German
- Year: 1897
- Author: Devendra M. Amatya Thomas M. Williams Leon Bren Carmen de Jong
- Language: English
- Year: 2016
- Author: Steve Hansen Ann Larkin Hansen
- Language: English
- Year: 2015
- Author: Norio Tanaka Wun Jern NG K B S N Jinadasa
- Language: English
- Year: 2011