Duque Quintero, M., R. Rosero Noguera, and M. Olivera Ángel. “Digestion of Dry Matter, Crude Protein and Amino Acids of the Diet Dairy Cows”. Agronomía Mesoamericana, vol. 28, no. 2, Apr. 2017, pp. 341-56, doi:10.15517/ma.v28i2.25643.