1. FERSTER, C. B., NURNBERGER, J. I. & LEVITT, E. B. The control of eating. J. Mathetics, 1962, I, 87–109.
2. GOLDIAMOND, I. Stuttering and fluency as manipulatable operant response classes. L. KRASNER and L. P. ULLMANN (Eds.), In Research in behavior modification, New York: Holt, Rinehart & Winston, 1965. Pp. 106–156.
3. HAMMOND, E. C. The effects of smoking. Scientific Amer., 1962, 207, 39–51.
4. HOLLAND, J. G., & SKINNER, B. F. The analysis of behavior. New York: McGraw-Hill, 1961.
5. HOMME, L. E. Control of the relaxation operant. Unpublished manuscript, May 1965.