Prieto-Manrique, E., J. E. Vargas-Sánchez, J. Angulo-Arizala, and L. Mahecha-Ledesma. “Fat and Fatty Acids of Cow Milk Grazing in Four Production Systems”. Agronomía Mesoamericana, vol. 28, no. 1, Dec. 2016, pp. 19-42, doi:10.15517/am.v28i1.22816.