M. del C. Molina, M. D. García, and S. E. Chorzempa, “Meiotic study of Zea mays ssp. mays (2n = 40) x Tripsacum dactyloides (2 n = 72) hybrid and its progeny”, Electron. J. Biotechnol., vol. 9, no. 3, pp. 0–0, Jun. 2006.