Esqueda-Esquivel, V. A., O. H. Tosquy-Valle, and E. Rosales-Robles. “Effectiveness of the Mixture Picloram and Fluroxypyr on the Control of Perennial Weeds of Tropical Grasslands”. Agronomía Mesoamericana, vol. 16, no. 2, Sept. 2005, pp. 185-90, doi:10.15517/am.v16i2.11871.