Donald W. Zimmerman

Rate changes after unscheduled omission and presentation of reinforcement.

D. W. Zimmerman, Donald W. Zimmerman, 1971, Journal of the experimental analysis of behavior.

Intermittent Reinforcement of Discriminatively Controlled Responses and Runs of Responses.

D W Zimmerman, Donald W. Zimmerman, 1960, Journal of the experimental analysis of behavior.