@article{madrakian_afkhami_khalafi_mohammadnejad_2006,  title={Spectrophotometric determination of catecholamines based on their oxidation reaction followed by coupling with 4-aminobenzoic acid},  volume={17},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532006000700010},  DOI={10.1590/S0103-50532006000700010},  number={7},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Madrakian, Tayyebeh and Afkhami, Abbas and Khalafi, Lida and Mohammadnejad, Massoumeh},  year={2006},  month={Nov},  pages={1259–1265} }