- Author: John U. Wolff Soepomo Poedjosoedarmo
- Language: English
- Year: 1982
- Author: Ioana Bogdan Cătăniciu
- Language: English
- Year: 1981
- Author: Terence Reeves-Smyth (editor) Fred Hamond (editor)
- Language: English
- Year: 1983
- Author: Martin Markl
- Language: English
- Year: 2012
- Author: Simon Meier
- Language: German
- Year: 2013
- Author: Samuel N. Rosenberg
- Language: English
- Year: 1970
- Author: Maren Bagge
- Language: German
- Year: 2022
- Author: Paul M. Lloyd
- Language: German
- Year: 1968
