Guiotoku, Marcela, et al. “Molecular and morphological characterization of hydrochar produced by microwave‑assisted hydrothermal carbonization of cellulose”. Pesquisa Agropecuária Brasileira, vol. 47, nº 5, junho de 2012, p. 687-92, https://doi.org/10.1590/S1678-3921.pab2012.v47.10003.