1. Fixed-ratio punishment;Azrin;Journal of the Experimental Analysis of Behavior,1963
2. Effects of alcohol, chlordiazepoxide, cocaine and pentobarbital on responding maintained under fixed-interval schedules of food or shock presentation;Barrett;Journal of Pharmacology and Experimental Therapeutics,1976
3. Behavior simultaneously maintained by both presentation and termination of noxious stimuli;Barrett;Journal of the Experimental Analysis of Behavior,1978
4. The correlation-based law of effect;Baum;Journal of the Experimental Analysis of Behavior,1973