Youngblut, Christine (1998). Educational Uses of Virtual Reality Technology. IDA Document D-2128. Alexandria, VA: Institute for Defense Analyses. [ PDF Document]

Youngblut, C. et. al (1996). Review of Virtual Environment Interface Technology. IDA Paper P-3186, produced by Institute for Defense Analyses.

Encyclopedia of Virtual Environments (EVE)
The Journal of Virtual Environments (JOVE)

Produced by the students of Dr. Ben Shneiderman's CMSC 828S Virtual Reality and Telepresence Course, Fall 1993.

Kolasinski, E. (1996). Prediction of Simulator Sickness in a Virtual Environment. Unpublished doctoral dissertation, Orlando, Florida, University of Central Florida, . HTML Document.