Sugawara, L. M., Rudorff, B. F. T., & Adami, M. (2009). Feasibility of the use of Landsat imagery to map soybean crop areas in ParanĂ¡, Brazil. Pesquisa Agropecuaria Brasileira, 43(12), 1777–1783. https://doi.org/10.1590/S1678-3921.pab2008.v43.1053