Antunes, J. F. G.; Mercante, E.; Esquerdo, J. C. D. M.; Lamparelli, R. A. de C.; Rocha, J. V. Soybean Crop Area Estimation through Image Classification Normalized by the Error Matrix. PAB 2012, 47 (9), 1288-1294. https://doi.org/10.1590/S1678-3921.pab2012.v47.11148.