Córdova-Orellana, Hugo Salvador, Salvador Castellanos, and Jorge Bolaños. 2006. “Twenty Five Years of system’s Improvement of Corn in Central America: Accomplishments and Strategies Toward the Year 2000”. Agronomía Mesoamericana 13 (1):73-84. https://doi.org/10.15517/am.v13i1.13567.