Parrili, Marina, et al. “Productive Traits of Heifers Subjected to Feed Restriction and Diet Supplemented With Vitamins D and E”. Pesquisa Agropecuaria Brasileira, vol. 46, no. 8, Oct. 2011, pp. 920-7, doi:10.1590/S1678-3921.pab2011.v46.9846.