@article{tavani_volzone_1999,  title={Adsorption of sulphuric acid on smectite from acidic aqueous solutions},  volume={45},  ISSN={0366-6913},  url={https://doi.org/10.1590/S0366-69131999000500004},  DOI={10.1590/S0366-69131999000500004},  number={295},  journal={Cerâmica},  publisher={Associação Brasileira de Cerâmica},  author={Tavani, E. L. and Volzone, C.},  year={1999},  month={May},  pages={133–136} }