Lopes, Fernando César Ferraz, et al. “Milk Fatty Acid Composition in Holstein X Gyr Dairy Cows Fed Chopped Elephantgrass-Based Diets Containing Two Types of Sunflower Oil Associated With Two Methods of Concentrate Feeding”. Semina: Ciências Agrárias, vol. 41, no. 6, Sept. 2020, pp. 2759-78, doi:10.5433/1679-0359.2020v41n6p2759.