References
[White, 1988]
While, Leslie A. The locus of mathematical reality: an anthropological footnote. Newman, James R., The world of mathematics. Redmond: Tempus; 1988: 2325-2340. ISBN: 1-55615-148-9.
Cyberspace geography visualization - 15 October 1995
Luc Girardin, The Graduate Institute of International Studies