@article{calixto_cervini_cavalheiro_2012,  title={Determination of tetracycline in environmental water samples at a graphite-polyurethane composite electrode},  volume={23},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532012000500020},  DOI={10.1590/S0103-50532012000500020},  number={5},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Calixto, Carolina M. F. and Cervini, Priscila and Cavalheiro, Éder T. G.},  year={2012},  month={May},  pages={938–943} }