RIBES, E.; LÓPEZ VALADÉZ, F. Effects of a delta stimulus on the acquisition of concurrent responses Under a temporally-defined schedule. Mexican Journal of Behavior Analysis, [S. l.], v. 5, n. 1, 2011. DOI: 10.5514/rmac.v5.i1.23663. Disponível em: https://revistas.unam.mx/index.php/rmac/article/view/23663. Acesso em: 7 may. 2024.