1. Neurochemical correlates of behavioral processes;Barrett;Drug Development Research
2. Behavioral effects of morphine and methadone in rhesus monkeys;Bigelow;Psychonomic Science,1971
3. Auto-shaping of the pigeon's key-peck;Brown;Journal of the Experimental Analysis of Behavior,1968
4. Studies on behavior: I. Differential sensitivity to pentobarbital of pecking performance in pigeons depending on the schedule of reward;Dews;Journal of Pharmacology and Experimental Therapeutics,1955