Caten, A. ten; Dalmolin, R. S. D.; Pedron, F. A.; Mendonça-Santos, M. de L. Multivariate Analysis Applied to Reduce the Number of Predictors in Digital Soil Mapping. PAB 2011, 46 (5), 554-562. https://doi.org/10.1590/S1678-3921.pab2011.v46.9731.