Rosset, Jean Sérgio, et al. “Chemical Attributes, Total Organic Carbon Stock and Humified Fractions of Organic Matter Soil Submitted to Different Systems of Sugarcane Management”. Semina: Ciências Agrárias, vol. 35, no. 5, Nov. 2014, pp. 2351-66, doi:10.5433/1679-0359.2014v35n5p2351.