Tadeo-Robledo, Margarita, et al. “Yielding of Male-Sterile and Fertile on Maize Hybrids at Two Locations in High Valley of Mexico”. Revista Mexicana De Ciencias Agrícolas, vol. 5, no. 5, Feb. 2018, pp. 883-91, https://doi.org/10.29312/remexca.v5i5.911.