Pérez-Acosta, A. M., G. S. Martínez, K. E. Corredor Páez, C. Vargas-Irwin, and L. F. Méndez Pardo. “Consummatory Successive Negative Contrast in Mongolian Gerbil (Meriones Unguiculatus)”. International Journal of Psychological Research, vol. 9, no. 2, July 2016, pp. 52-60, doi:10.21500/20112084.2425.