Palacios-Leyva, R., F. Aldana-Franco, B. Lara-Guzmán, and F. Montes-González. “The Impact of Population Composition for Cooperation Emergence in Evolutionary Robotics”. International Journal of Combinatorial Optimization Problems and Informatics, vol. 8, no. 3, Jan. 2018, pp. 20-32, https://ijcopi.org/ojs/article/view/15.