@article{corrêa_velini_arruda_2002,  title={Teores de metais na biomassa de Egeria densa, Egeria najas e Ceratophyllum demersum},  volume={20},  ISSN={0100-8358},  url={https://doi.org/10.1590/S0100-83582002000400005},  DOI={10.1590/S0100-83582002000400005},  number={spe},  journal={Planta Daninha},  publisher={Sociedade Brasileira da Ciência das Plantas Daninhas },  author={Corrêa, M.R. and Velini, E.D. and Arruda, D.P.},  year={2002},  pages={45–49} }