Urdang, E. G., and R. Stuart. "Orientation Enhancement Through Integrated
Virtual Reality and Geographic Information Systems." In Proceedings
of CSUN's Seventh Annual International Conference on Technology and Persons
with Disabilities, held March 1993 in Northridge, CA, 55--61.
The authors propose the use of virtual acoustic display in combination
with geographic information systems to assist a visually impaired user
to navigate in a city.