References
[Kent and Neuss, 1994]
Kent, Robert E. and Neuss, Christian. Creating a web analysis and visualization environment; 1994. <URL:http://www.ncsa.uiuc.edu/SDG/IT94/Proceedings/Autools/kent/kent.html>.
Cyberspace geography visualization - 15 October 1995
Luc Girardin, The Graduate Institute of International Studies