Berragán-Hernández, W. A., Mahecha-Ledesma, L., & Cajas-Jirón, Y. S. (2015). Physiological-metabolic variables of heat stress in cows grazing in silvopastoral systems and in one treeless prairie. Agronomía Mesoamericana, 26(2), 211–223. https://doi.org/10.15517/am.v26i2.19277