Villegas-Cortez, J., J. Sossa, C. Avilés-Cruz, and G. Olague. “Evolutionary Associative Memories Through Genetic Programming”. Revista Mexicana De Física, vol. 57, no. 2, Jan. 2011, pp. 110-0, https://rmf.smf.mx/ojs/index.php/rmf/article/view/3811.