@article{carvalho_costa_ferreira_teixeira_2004,  title={Spectrophotometric determination of chromium in steel with 4-(2- thiazolylazo)-resorcinol (TAR) using microwave radiation},  volume={15},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532004000100025},  DOI={10.1590/S0103-50532004000100025},  number={1},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Carvalho, Luciene S. de and Costa, Antônio Celso S and Ferreira, Sérgio L. C and Teixeira, Leonardo S. G},  year={2004},  month={Jan},  pages={153–157} }