rocha, geraldo cesar, e Han Xiaozeng. 2013. “Characterization of Carbon and Nitrogen Distributed in Density Fractions and Humic Substances from Oxisols under Different Land Uses in the Atlantic Forest Biome in Southeast Brazil”. Brazilian Geographical Journal 4 (1). Ituiutaba. https://seer.ufu.br/index.php/braziliangeojournal/article/view/23012.