@article{oliveira_freitas_martins_couto_pinto_paula_conceição_bara_2012,  title={Isolation and quantitative HPLC-PDA analysis of lupeol in phytopharmaceutical intermediate products from Vernonanthura ferruginea (Less.) H. Rob.},  volume={35},  ISSN={0100-4042},  url={https://doi.org/10.1590/S0100-40422012000500032},  DOI={10.1590/S0100-40422012000500032},  number={5},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Oliveira, Ezequiane Machado Silva and Freitas, Sabrine Lemes and Martins, Frederico Severino and Couto, Renê Oliveira and Pinto, Mariana Viana and Paula, José Realino and Conceição, Edemilson Cardoso and Bara, Maria Teresa Freitas},  year={2012},  pages={1041–1045} }