Simeon Keates Ray Adams Cathy Bodine Sara J. Czaja Wayne Gordon Peter Gregor Emily Hacker Vicki L. Hanson John Kemp Mark Laff Clayton Lewis Michael Pieper John T. Richards David Rose Anthony Savidis Greg Schultz Paul Snayd Shari Trewin Philip Varker Cognitive and learning difficulties and how they affect access to IT systems. 329-339 2007 5 Universal Access in the Information Society 4 http://dx.doi.org/10.1007/s10209-006-0058-4 db/journals/uais/uais5.html#KeatesABCGGHHKLLPRRSSSTV07