1. Gibson, H.B. (1987). Is hypnosis a placebo? Br. J. Exp. Clin. Hypnosis, 4, 149–155
2. Kleinhaus, M. and Eli, I. (1986). Potential deleterious effects of hypnosis in the clinical setting. Am. J. Clin. Hypnosis, 29, 155–159
3. Hilgard, E.R. and Hilgard, J.R. (eds.) (1985). Hypnosis in the Relief of Pain, Chap. 4. ( Los Altos, Calif.: W. Kaufmann )
4. Loeser, J.D. (1980). Low back pain. In Bonica, J.J. (ed.) Pain. ( New York: Raven Press )
5. Melzack, R and Wall, P. (1982). The Challenge of Pain. ( Harmondsworth: Penguin )