Genú, Aline Marques, et al. “Spectral Analysis of Soils from Mogi-Guaçú (SP) Region”. Semina: Ciências Agrárias, vol. 31, no. 4Sup1, Feb. 2011, pp. 1235-44, doi:10.5433/1679-0359.2010v31n4Sup1p1235.