1. Bancroft, J.H.J.: Desensitization and aversion in treatment of homo-sexuality. M.D. dissertation, Univ. of London 1970.
2. Feldman, M.P., MacCulloch, M.P.: Homosexual Behaviour. New York-London: Pergamon Press 1971.
3. Fisher, D.: Training community agents of change for disturbed and delinquent children. Paper to 3rd Southern California Conference on Behaviour Modification. Los Angeles. October 1971.
4. Gelder, M.G., Marks, I.M., Wolff, H.H.: Desensitization and psycho-therapy in the treatment of phobics states: A controlled inquiry. Brit. J. Psychiat. 113, 53–73 (1967).
5. Hodgson, R., Rachman, S., Marks, I.M.: The treatment of obsessive-compulsive neurosis: follow-up and further findings. Behav. Res. Ther. 10, 181–189 (1972).