References
[Eklund, 1995]
Eklund, John. Cognitive models for structuring hypermedia and implications for learning from the world-wide web; 1995. <URL:http://www.scu.edu.au/ausweb95/papers/hypertext/eklund/index.html>.
Cyberspace geography visualization - 15 October 1995
Luc Girardin, The Graduate Institute of International Studies