@article{paiva_lima_figueiredo_kaplan_2004,  title={Plumbagin quantification in roots of Plumbago scandens L. obtained by different extraction techniques},  volume={76},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652004000300004},  DOI={10.1590/S0001-37652004000300004},  number={3},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Paiva, Selma R. de and Lima, Lucilene A. and Figueiredo, Maria Raquel and Kaplan, Maria Auxiliadora C.},  year={2004},  month={Sep},  pages={499–504} }