Dr. Robert T. London (2003). "Hypnosis: underused technique." Clinical Psychiatry News, Oct 2003 v31 i10 p8, citing study by Joseph Barber, International Journal of Clinical and Experimental Hypnnosis, 49:257-66, 2001.
Hammond, D.C. (1990). Handbook of hypnotic suggestions and metaphors. New York: W. W. Norton. This book cites the three studies listed below (studies 4, 5, and 6).
Nuland, W. and Field, P.B. (1970). "Smoking and hypnosis: A systematic clinical approach." International Journal of Clinical & Experimental Hypnosis, 18, 290-306. 60% success rate with a 4-session approach.
Crasilneck, H.B., & Hall, J.A. (1985). Clinical hypnosis: Principles and Applications (Second Edition). Orlando, Florida: Grune & Stratton. 64% success rate with a 4-session approach.
Watkins, H.H. (1976). "Hypnosis and smoking: A five-session approach." International Journal of Clinical and Experimental Hypnosis, 24 (4), 381-390. 67% success rate with a 5-session approach.
Hasan, Faysal, et. al. "Hypnotherapy as an Aid to Smoking Cessation of Hospitalized patients: Preliminary Results." Presented October 22, 2007 at CHEST 2007, the annual meeting of the American College of Chest Physicians. 50% success rate with a single-session approach plus recorded follow up.