@article{andrade_souza_pereira_fabris_domingues_2009,  title={Synthesis and characterization of magnetic nanoparticles coated with silica through a sol-gel approach},  volume={55},  ISSN={0366-6913},  url={https://doi.org/10.1590/S0366-69132009000400013},  DOI={10.1590/S0366-69132009000400013},  number={336},  journal={Cerâmica},  publisher={Associação Brasileira de Cerâmica},  author={Andrade, A. L. and Souza, D. M. and Pereira, M. C. and Fabris, J. D. and Domingues, R. Z.},  year={2009},  month={Oct},  pages={420–424} }