References
[Eichmann, 1994]
Eichmann, David. Ethical web agents; 1994. <URL:http://www.ncsa.uiuc.edu/SDG/IT94/Proceedings/Agents/eichmann.ethical/eichmann.html>.
Cyberspace geography visualization - 15 October 1995
Luc Girardin, The Graduate Institute of International Studies