SERRANO, M., MORENO, S., CAMACHO, I., AGUILAR, F. and CARPIO, C. 2011. Physical dimension of the added signals in temporally defined schedules. Mexican Journal of Behavior Analysis. 32, 1 (Jan. 2011), 13–25. DOI:https://doi.org/10.5514/rmac.v32.i1.23225.