Rasch, E. M., & Balsano, J. S. (1973). Biochemical and cytogenetic studies of <i>Poecilia</i> from eastem Mexico. II. Frequency, perpetuation, and probable origin of triploid genomes in females associated with <i>Poecilia formosa</i>. Revista De Biología Tropical, 21(2), 351–381. Retrieved from https://revistas.ucr.ac.cr/index.php/rbt/article/view/27284