@article{agra_silva_basílio_freitas_barbosa-filho_2008,  title={Survey of medicinal plants used in the region Northeast of Brazil},  volume={18},  ISSN={0102-695X},  url={https://doi.org/10.1590/S0102-695X2008000300023},  DOI={10.1590/S0102-695X2008000300023},  number={3},  journal={Revista Brasileira de Farmacognosia},  publisher={Sociedade Brasileira de Farmacognosia},  author={Agra, Maria de Fátima and Silva, Kiriaki Nurit and Basílio, Ionaldo José Lima Diniz and Freitas, Patrícia França de and Barbosa-Filho, José Maria},  year={2008},  month={Jul},  pages={472–508} }