Azevedo, Henrique de Oliveira, et al. “Slow‑release Urea to Replace Soybean Meal in Finishing Feedlot Cattle”. Pesquisa Agropecuaria Brasileira, vol. 50, no. 11, Dec. 2015, pp. 1079-86, doi:10.1590/S1678-3921.pab2015.v50.19999.