Cezar, E., Nanni, M. R., Chicati, M. L., Souza Júnior, I. G. de, & Costa, A. C. S. da. (2013). Use of spectral data for estimating the relationship between iron oxides and 2:1 minerals with their respective reflectances. Semina: Ciências Agrárias, 34(4), 1479–1492. https://doi.org/10.5433/1679-0359.2013v34n4p1479