@article{article7518f88a,
title   = {Síntese de criptomelana},
author = {Hypolito, Raphael and Giovanoli, R. and Valarelli, José Vicente and Sonoki, N. T.},
year = {1982},
doi = {10.11606/issn.2316-8978.v13i0p01-13},
journal   = {Boletim IG}
}