Ribes, Emilio,  Carlos  Torres, J. Alberto Barrera, and Alfredo Mayoral. “DISCRIMINATIVE CONTROL BY COMPOUND STIMULI IN TEMPORALLLY DEFINED REINFORCEMENT SCHEDULES”. Mexican Journal of Behavior Analysis 1, no. 2 (August 31, 2011): 25–51. Accessed July 5, 2024. https://journals.unam.mx/index.php/rmac/article/view/27084.