@article{albert_victoria filho_2002,  title={Micromorfologia Foliar de Espécies de Sida spp. (guanxumas)},  volume={20},  ISSN={0100-8358},  url={https://doi.org/10.1590/S0100-83582002000300002},  DOI={10.1590/S0100-83582002000300002},  number={3},  journal={Planta Daninha},  publisher={Sociedade Brasileira da Ciência das Plantas Daninhas },  author={Albert, L.H.B. and Victoria Filho, R.},  year={2002},  month={Dec},  pages={337–342} }