Coutinho de Alcantara Gil, M. S., Minto de Sousa, N. and das Graças de Souza, D. (2011) “Two procedures for the introduction of differential reinforcement in teaching simple discrimination to infants”, Acta Comportamentalia, 19(2). Available at: https://revistas.unam.mx/index.php/acom/article/view/28025 (Accessed: 17 July 2024).