1. Operant conditioning of the GSR;Kimmel;Psychol Rep,1960
2. Differentiation of an autonomic response through operant reinforcement;Shapiro;Psychosom Med,1964
3. Operant conditioning of GSR;Fowler;J Exp Psychol,1962
4. Operant conditioning of heart rate speeding;Engel;Psychophysiology,1967
5. Operant conditioning of heart rate slowing;Engel;Psychophysiology,1966