Pedroso, André de Faria, et al. “Performance of Holstein Heifers Fed Sugarcane Silages Treated With Urea, Sodium Benzoate or <i>Lactobacillus buchneri< I>”;. Pesquisa Agropecuaria Brasileira, vol. 41, no. 4, Apr. 2006, pp. 649-54, doi:10.1590/S1678-3921.pab2006.v41.7187.