Virgen-VargasJuan, Zepeda-BautistaRosalba, Ávila-PerchesMiguel, Espinosa-CalderónAlejandro, Arellano-VázquezJosé, and Gómez-VázquezAlfredo. “Seed Production Lines of Maize: Population Density and Interaction.”. Agronomía Mesoamericana 25, no. 2 (July 1, 2014): 323-335. Accessed January 24, 2020. https://revistas.ucr.ac.cr/index.php/agromeso/article/view/15439.