Reinforcer control by comparison-stimulus color and location in a delayed matching-to-sample study - Almeida-Verdu, Ana Claudia.; Alves, Cristine O.; Bevilacqua, Marie Cecilia.; Huziwara, Edson M.; Lopes, Jair, Jr.; McIlvane, William J.; Rose, Julio C. De; Souza, Deisy G. de.