@article{ferraz_2009,  title={Carta ao editor},  volume={32},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422009000600057},  DOI={10.1590/S0100-40422009000600057},  number={6},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Ferraz, Márcia H. M.},  year={2009},  pages={1685–1686} }