@article{fernandes_calheiro_sánchez_camacho_rocha_moraes_sousa_2017,  title={Characterization of Silica Produced from Rice Husk Ash: Comparison of Purification and Processing Methods},  volume={20},  ISSN={1516-1439},  url={https://doi.org/10.1590/1980-5373-MR-2016-1043},  DOI={10.1590/1980-5373-MR-2016-1043},  journal={Materials Research},  publisher={ABM, ABC, ABPol},  author={Fernandes, Iara Janaína and Calheiro, Daiane and Sánchez, Felipe A. L. and Camacho, Alini Luísa Diehl and Rocha, Tatiana Louise Avila de Campos and Moraes, Carlos Alberto Mendes and Sousa, Vânia Caldas de},  year={2017},  pages={512–518} }