@article{ruggiero_zaidan_1997,  title={Estudo de desenvolvimento de Viguiera robusta Gardn., uma Asteraceae do cerrado},  volume={20},  ISSN={0100-8404},  url={https://doi.org/10.1590/S0100-84041997000100001},  DOI={10.1590/S0100-84041997000100001},  number={1},  journal={Brazilian Journal of Botany},  publisher={Sociedade Botânica de São Paulo},  author={Ruggiero, Patricia G. C. and Zaidan, Lilian B. P.},  year={1997},  month={Jun},  pages={01–09} }