1. Bauer, R. H., Duncan, N. C.: Twenty-four hour proactive avoidance and discrimination learning in rats by d-amphetamine. J. comp. physiol. Psychol. 77, 521?527 (1971).
2. Dews, P. B.: The measurement of the influence of drugs on voluntary activity in mice. Brit. J. Pharmacol. 8, 46?48 (1953).
3. Dews, P. B.: Studies on behavior. II. The effects of pentobarbital, methamphetamine, and scopolamine on performances in pigeons involving discriminations. J. Pharmacol. exp. Ther. 115, 380?389 (1955).
4. Dews, P. B.: Studies on behavior. IV. Stimulant actions of methamphetamine. J. Pharmacol. exp. Ther. 122, 137?147 (1958).
5. Domino, E. F., Caldwell, D. F., Heinke, R.: Effect of psychoactive agents on acquisition of conditioned pole jumping in rat. Psychopharmacologia (Berl.) 8, 285?289 (1965).