References
- Gunderson, J., Kelso, D., &. Vanderheiden, G. (1982). A multifunction alternative computer "keyboard" for the physically handicapped using headpointing techniques. Proceedings of the IEEE Computer Society Workshop on Computing to Aid the Handicapped (pp. 77–81). Los Angeles, CA: IEEE Computer Society.
- Smith, R. O., Christiaansen, R., Borden, B., Lindberg, D., Gunderson, J., & Vanderheiden, G. (1988). Effectiveness of a writing system using a computerized long-range optical pointer and 10-branch abbreviation expansion. Manuscript submitted for publication.
- Vanderheiden, G., & Kelso, D. (1984). Ten-branch abbreviation ex-pansion for greater efficiency in augmentative communication sys-tems. Proceedings of the Fifth Annual Conference on Rehabilitation Engineering (p. 2). Washington, DC:RESNA: The Association for the Advancement of Rehabilitation Engineering.