1. Ando, K., & Yanagita, T. (1978). The discriminative stimulus properties of intravenously administered cocaine in rhesus monkeys. In R. C. Colpaert & S. A. Rosecrans (Eds.), Stimulus properties of drugs: Ten years of progress (pp. 125–136). Amsterdam: Elsevier/North Holland.
2. Beach, H. D. (1975). Morphine addiction in rats. Canadian Journal of Psychology, 11, 104–112.
3. Bindra, D. (1969). The interrelated mechanisms of reinforcement and motivation and the nature of their influence on response. In W. J. Arnold & D. Levine (Eds.), Nebraska symposium on motivation (pp. 1–33). Lincoln: University of Nebraska Press.
4. Bindra, D., & Campbell, J. F. (1967). Motivational effects of rewarding intracranial stimulation. Nature, 215, 375–376.
5. Bindra, D., & Palfai, T. (1967). Nature of positive and negative incentive-motivational effects of general activity. Journal of Comparative and Physiological Psychology, 63, 288–297.