@article{carvalho_pinto_figueiredo-ribeiro_1998,  title={Inulin production by Vernonia herbacea as influenced by mineral fertilization and time of harvest},  volume={21},  ISSN={0100-8404},  url={https://doi.org/10.1590/S0100-84041998000300006},  DOI={10.1590/S0100-84041998000300006},  number={3},  journal={Brazilian Journal of Botany},  publisher={Sociedade Botânica de São Paulo},  author={CARVALHO, MARIA ANGELA MACHADO DE and PINTO, MARCOS MECCA and FIGUEIREDO-RIBEIRO, RITA DE CÁSSIA LEONE},  year={1998},  month={Dec},  pages={275–280} }