Ortega, Román Maza, et al. “Substitution of Soybean Meal for Cottonseed Meal in Multiple Supplements for Grazing Beef Heifers in the Dry Season”. Semina: Ciências Agrárias, vol. 37, no. 1, Feb. 2016, pp. 495-06, doi:10.5433/1679-0359.2016v37n1p495.