@article{stets_tavares_peralta-zamora_pessoa_nagata_2013,  title={Simultaneous determination of rifampicinand isoniazid in urineand pharmaceutical formulations by multivariate visible spectrophotometry},  volume={24},  ISSN={0103-5053},  url={https://doi.org/10.5935/0103-5053.20130154},  DOI={10.5935/0103-5053.20130154},  number={7},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Stets, Sandra and Tavares, Talita M. and Peralta-Zamora, Patricio G. and Pessoa, Christiana A. and Nagata, Noemi},  year={2013},  month={Jul},  pages={1198–1205} }