1. 1. Benedict, M., ed. “Cyberspace: First Steps,” The MIT Press, 1991.
2. 2. Billingsley, Daniel W. et al. “Revolution at NavSea-Managing Design and Engineering Information,” Society of Naval Architects/Association of Scientists and Engineers; Naval Ship Design Symposium, 25 February 1992.
3. 3. Billingsley, Daniel W. and J. Christopher Ryan . “A Computer System Architecture for Naval Ship Design, Construction, and Service Life Support,” Proceedings, Society of Naval Architects and Marine Engineers, 1986.
4. 4. Chien, Y.T., and JimJenkins, eds. “Virtual Reality Technology: A Report of the Task Group on Virtual Reality to the High Performance Computing and Communications and Information Technology Subcommittees,” The FCCSET Committee on Physical, Mathematical and Engineering Sciences, 2 August 1993.
5. 5. Department of Defense, Directive 5000.1, Instruction 5000.2, and Manual 5000.2M, 23 February 1991.