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[1] Jones, Glenn R., Sample, James O., Wiegand, Gerhard. Virtual Reality. Jones Telecommunicatios & Encyclopedia. World Wide Web URL:
http://www.digitalcentury.com/encyclo/update/vr.html

[2] Club VR, Cronologia Realidad Virtual. RV-UNAM. World Wide Web URL: http://exodus.dcaa.unam.mx/virtual/history1.html

[3] D.S. Perry, Lynellen, Smith, Christopher M., y Young, Steven, Una investigación sobre interfaces actuales de realidad virtual. World Wide Web URL: http://www.acm.org/crossroads/espanol/xrds3-3/vrhci.html

[4] VRML-Realidad Virtual. Activ@mente .World Wide Web URL: http://www.activamente.com.mx/vrml/index.html

[5] Matsuba, Stephen N, Roehl, Bernie 1996. Using VRML. Que

[6] Duda, Richard O. 3D Audio for HCI. World Wide Web URL: http://www.engr.sjsu.edu/~knapp/HCIROD3D/3D_home.htm

[7] Exploiting Virtual Reality Techniques in Education and Training: Technological Issues World Wide Web URL http://www.man.ac.uk/MVC/SIMA/vrtech/intro1.html

[8] Smith, Christopher M. Factores humanos en interfaces hapticas. World Wide Web URL: http://www.acm.org/crossroads/espanol/xrds3-3/haptic.html

[9] Maxilofacial Virtual Surgery from 3D Images. World Wide Web URL: http://www.cineca.it/visit/vs/index.html#abstract

[10] Virtual Reality Applications Center. Iowa State University. World Wide Web URL: http://www.icemt.iastate.edu/about.html

[11] V R Lab U. Buffalo http://wings.buffalo.edu/academic/department/eng/mae/vrlab

[12] Fraser, Glen, Fisher, Scott. How RT Technology can improve the quality of life. SIGGRAPH Computer Graphics Newsletter-Real Time Interactive Graphics. WWW URL: http://www.siggraph.org/publications/newsletter/v33n2/columns/fraser.html

[13] Silicon Graphics, http://www.sgi.com/features/2000/april/

[14] VRCO, Inc. http://www.vrco.com/press.html