@article{schwanke_melo_silva_pergher_2013,  title={Use of rice husk ash as only source of silica in the formation of mesoporous materials},  volume={59},  ISSN={0366-6913},  url={https://doi.org/10.1590/S0366-69132013000100022},  DOI={10.1590/S0366-69132013000100022},  number={349},  journal={Cerâmica},  publisher={Associação Brasileira de Cerâmica},  author={Schwanke, A. J. and Melo, D. M. A. and Silva, A. O. and Pergher, S. B. C.},  year={2013},  month={Jan},  pages={181–185} }