RIBES, Emilio, CARLOS TORRES, and ALFREDO MAYORAL. “Effects of the Presence and Absence of Stimuli Correlated With Different Probabilities of Reinforcement and With Extinction in Temporarily-Defined Schedules”. Mexican Journal of Behavior Analysis 26, no. 3 (January 26, 2011): 327–354. Accessed April 27, 2024. https://revistas.unam.mx/index.php/rmac/article/view/23500.