@article{freitas_fatibello-filho_mattos_2012,  title={Square-wave voltammetric determination of rutin in pharmaceutical formulations using a carbon composite electrode modified with copper (II) phosphate immobilized in polyester resin},  volume={48},  ISSN={1984-8250},  url={https://doi.org/10.1590/S1984-82502012000400007},  DOI={10.1590/S1984-82502012000400007},  number={4},  journal={Brazilian Journal of Pharmaceutical Sciences},  publisher={Universidade de São Paulo, Faculdade de Ciências Farmacêuticas},  author={Freitas, Kellen Heloizy Garcia and Fatibello-Filho, Orlando and Mattos, Ivanildo Luiz de},  year={2012},  month={Oct},  pages={639–649} }