@article{zogheib_bona_kimpara_mccabe_2011,  title={Effect of hydrofluoric acid etching duration on the roughness and flexural strength of a lithium disilicate-based glass ceramic},  volume={22},  ISSN={0103-6440},  url={https://doi.org/10.1590/S0103-64402011000100008},  DOI={10.1590/S0103-64402011000100008},  number={1},  journal={Brazilian Dental Journal},  publisher={Fundação Odontológica de Ribeirão Preto},  author={Zogheib, Lucas Villaça and Bona, Alvaro Della and Kimpara, Estevão Tomomitsu and Mccabe, John F.},  year={2011},  pages={45–50} }