Kuiawski, Amanda Carolina Marx Bacellar, et al. “Vegetation Indexes and Delineation of Management Zones for Soybean”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 47, no. 2, July 2017, pp. 168-77, https://doi.org/10.5216/pat.v47i2.43904.