3Abascal J, Arrue M, Garay N. USERfit Tool: A tool to facilitate Design for All[A]. Theoretical Perspectives, Practice, and Expe rience, 7th ERCIM International Workshop on User Interfaces for All. Paris, France, 2002 ,October, 24 -25.
4David P,Simon R. USERfit-a framework for user centred design in assistive technology [J]. Technology and Disability, 1998, 9 (3) :163-171.