1. Expressive communication, computer access, mobility and environmental control in an integrated package;Romich,1984
2. Visions of Augmentative Communication Hardware in the 21st Century;Vanderheiden,1989
3. Comspec Phase 1 Report,1992
4. Wheelchair-mounted integrated control systems for multiply handicapped people;Hawley;J. Biomed. Engng,1993
5. Uniform User Interface for Communication and Control;Buhler,1993