Neto, José de Souza, et al. “Effects of Partial Replacement of Cotton Seed Meal for Sheep in Confinement - an Economic Analysis”. Pesquisa Agropecuaria Brasileira, vol. 21, no. 5, Apr. 2014, pp. 461-6, doi:10.1590/S1678-3921.pab1986.v21.14787.