1. L. Augustsson. Access to the USA - Recent Disability Legislation. The Swedish Handicap Institute, 1991.
2. CE-88) Council of Europe. Legislation on the Rehabilitation of Disabled People. Strasbourg, 1988.
3. Alistair D.N. Edwards (Ed.). Extra-Ordinary Human-Computer Interaction. Interfaces for Users with Disabilities. Cambridge University Press, Cambridge, 1995.
4. H. Hyppönen (Ed.). Future Actions in the Field of Telematics and Disabilities. COST 219. CEC-DGXIII (EUCO-TELE 219/CTD/96). Finland, 1996.
5. Information Highway Advisory Council. Connection Community Content. The Challenge of the Information Highway. Final Report of the IHAC. Minister of Supply and Services. Canada, 1995.