@article{toledo_duarte_nakashima_2003,  title={Análise farmacognóstica da droga e do extrato fluido das folhas de Symphytum officinale L. (Boraginaceae)},  volume={13},  ISSN={0102-695X},  url={https://doi.org/10.1590/S0102-695X2003000400001},  DOI={10.1590/S0102-695X2003000400001},  journal={Revista Brasileira de Farmacognosia},  publisher={Sociedade Brasileira de Farmacognosia},  author={Toledo, A.C.O. and Duarte, M.R. and Nakashima, T.},  year={2003},  pages={1–2} }