FERNANDES, R. B. A., I. A. de Carvalho Junior, E. S. Ribeiro Junior, e E. de S. Mendonça. “Comparison of Different Methods for the Determination of Total Organic Carbon and Humic Substances in Brazilian Soils”. Revista Ceres, vol. 62, nº 5, outubro de 2015, https://ojs.ceres.ufv.br/ceres/article/view/1839.