Jobim, C. C., Lombardi, L., Macedo, F. A. F. de, & Branco, A. F. (2008). Quality of corn grain silage added with soybean, sunflower or urea. Pesquisa Agropecuaria Brasileira, 43(5), 649–656. https://doi.org/10.1590/S1678-3921.pab2008.v43.373