1. Effects of d-amphetamine on responding simultaneously maintained and punished by presentation of electric shock;Barrett;Psychopharmacology,1977
2. Reinforcement and punishment of behavior by the same consequent event;Barrett;Psychological Reports,1977
3. Behavior as a stimulus: Joint effects of d-amphetamine and pentobarbital;Branch;Journal of Pharmacology and Experimental Therapeutics,1974
4. Consequent events as determinants of drug effects on schedule-controlled behavior: Modification of effects of cocaine and d-amphetamine following chronic amphetamine administration;Branch;Journal of Pharmacology and Experimental Therapeutics,1979