Rosset, Jean Sérgio, et al. “Phosphorus Fractions and Correlation With Soil Attributes in a Chronosequence of Agricultural under No-Tillage”. Semina: Ciências Agrárias, vol. 37, no. 6, Dec. 2016, pp. 3915-26, doi:10.5433/1679-0359.2016v37n6p3915.