1. Azrin, N. H., Holz, W. C.: Punishment. In: Operant behavior, W. K. Honig, ed., pp. 380?447. New York: Appleton-Century-Crofts 1966
2. Bignami, G.: Behavioral pharmacology and toxicology. Annu. Rev. Pharmacol. Toxicol. 16, 329?366 (1976)
3. Cook, L., Davidson, A. B.: Effects of behaviorally active drugs in a conflict-punishment procedure in rats. In: The benzodiazepines, S. Garattini, E. Mussini, and L. O. Randall, eds., pp. 327?345. New York: Raven 1973
4. Cook, L., Sepinwall, J.: Behavioral analysis of the effects and mechanism of action of benzodiazepines. Adv. Biochem. Psychopharmacol. 14, 1?28 (1975)
5. Dantzer, R.: Etude de l'activité des substances psychotropes sur le comportement de punition du Porc. J. Pharmacol. 6, 323?340 (1975)