References
- Ace Centre. Switches and Interfaces, Edition 2. 1988, (Microelectronics Education Support Unit (MESU) Publication, Ace Centre, Ormerod School, Waynfete Road, Headington, Oxford)
- Harwin W. S., Jackson R. D. Analysis of intentional gestures to assist computer access. Biological Engineering Society (BES) Annual Scientific Meeting, Bristol, September. Journal of Biomedical Engineering 1989, (in press)
- Fawcus R. Communication aids: past, present and future. Assistive Communication Aids for the Speech Impaired, Pam Enderby. Churchill Livingstone, Edinburgh 1987; 4–11
- Shire B., Snell E., Naumann S. (1988) A programmable RS-232 controlled infra-red controller. International Conference of the Association for the Advancement of Rehabilitation Technology, (ICAART), Montreal, 1988