Vega Alvarez, Isrrael, et al. “Tlaxcala, Research on Native and Improved Corn: Problems, Fields of Knowledge and New Challenges”. Revista Mexicana De Ciencias Agrícolas, vol. 13, no. 3, May 2022, pp. 539-51, https://doi.org/10.29312/remexca.v13i3.2888.