Preciado, Ernesto, Hugo Córdova, Arturo Terrón, Ernesto Cervantes, Esteban Betanzos, Alejandro Ortega, Noel Gómez, Cesar Reyes, Humberto Vallejo, and Mauricio Erazo. 2006. “Adaptation and Grain Yield of Quality Protein Maize Hybrids in Mexican Tropical and Subtropical Regions”. Agronomía Mesoamericana 12 (1):33-39. https://doi.org/10.15517/am.v12i1.17244.