J. Canul Ku, P. Ramírez Vallejo, F. Castillo González, J. L. Chávez Servia, M. Livera Muñoz, and L. M. Arias Reyes, “Pollen movement between native maize species in Yucatan and maintenance of genetic diversity”, RX, vol. 8, no. 3 Especial, pp. 51–60, Dec. 2012.