Poczynek, Mailson, et al. “Mass and Nutritional Quality of Upper and Lower Strata of Tropical Forages”. Semina: Ciências Agrárias, vol. 37, no. 4Supl1, Sept. 2016, pp. 2725-36, doi:10.5433/1679-0359.2016v37n4Supl1p2725.