Vendrame, Pedro Rodolfo Siqueira, et al. “Iron and Aluminum Forms and Their Relationship With Texture, Mineralogy and Organic Carbon in the Cerrado Oxisol”. Semina: Ciências Agrárias, vol. 32, no. 4Sup1, Dec. 2011, pp. 1657-66, doi:10.5433/1679-0359.2011v32n4Sup1p1657.