“Agronomic characteristics of forage sorghum cultivars for silage production in the lower middle San Francisco Valley - doi: 10.4025/actascianimsci.v35i1.13072”, Acta Sci. Anim. Sci., vol. 35, nº 1, p. 13–19, ago. 2012, doi: 10.4025/actascianimsci.v35i1.13072.