1. Ritualistic activity in obsessional patients;Beech;J. psychosomatic Res.,1971
2. Approaches to understanding obsessional states;Beech,1974
3. Decision-making, mood states and ritualistic behaviour among obsessional patients;Beech,1974
4. The Psychology of Fear and Stress;Gray,1971
5. The effects of contamination and washing in obsessional patients;Hodgson;Behav. Res. and Therapy,1972