Prates Coelho, Anderson, et al. “Vegetation Indices in the Prediction of Biomass and Grain Yield of White Oat under Irrigation Levels”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 48, no. 2, June 2018, pp. 109-17, https://doi.org/10.5216/pat.v48i2.51523.