Zárate-Martínez, J. P., J. C. Vinay-Vadillo, O. C. Carballo, V. D. Hernández-Hernández, and E. Villagómez Amezcua-Manjarres. “Effect of Feeding Calcium Soaps on Double Purpose Cows”. Agronomía Mesoamericana, vol. 22, no. 2, Dec. 2011, pp. 359-66, doi:10.15517/am.v22i2.11829.