Maia, Claudia Maria Branco de Freitas, Cristiane Regina Budziak Fukamachi, Alessandro Piccolo, and Antonio Sálvio Mangrich. 2012. “EPR and DRIFT Spectroscopic Characterization of Humic Fractions During Composting of Sawdust and Paper Mill Sludge”. Pesquisa Florestal Brasileira 32 (70): 117. https://doi.org/10.4336/2012.pfb.32.70.01.