1. Byrne, D.J. and Stevens, C.P. (1980) Mentally handicapped children’s responses to vibrotactile and other stimuli as evidence for the existence of a sensory hierarchy. Apex, 8, 96–8.
2. Cavet, J. (1990) Leisure Opportunities for People who are Profoundly and Multiply Handicapped, MPhil Thesis, University of Manchester.
3. Haggar, L.E. and Hutchinson, R.B. (1991) Snoezelen: the approach to the provision of leisure resource for people with profound and multiple handicaps. Mental Handicap, 19, 51–5.
4. Hulsegge, J. and Verheul, A. (1987) Snoezelen: Another World, Rompa, Chesterfield.
5. Hutchinson, R.B. and Haggar, L.E. (1991) The development and evaluation of a snoezelen leisure resource for people with profound and multiple handicaps in The Whittington Hall Snoezelen Project, (ed. R. Hutchinson), North Derbyshire Health Authority, Chesterfield.