@article{samra_pereira_delgado_borges_2008,  title={Color stability evaluation of aesthetic restorative materials},  volume={22},  ISSN={1806-8324},  url={https://doi.org/10.1590/S1806-83242008000300003},  DOI={10.1590/S1806-83242008000300003},  number={3},  journal={Brazilian Oral Research},  publisher={Sociedade Brasileira de Pesquisa Odontológica - SBPqO},  author={Samra, Adriana Postiglione Bührer and Pereira, Stella Kossatz and Delgado, Leyla Cotrina and Borges, Christiane Phillipini},  year={2008},  month={Jul},  pages={205–210} }