@article{zullo_azzini_salgado_ciaramello_1989,  title={Sapogeninas esteroídicas em sisal},  volume={48},  ISSN={0006-8705},  url={https://doi.org/10.1590/S0006-87051989000100003},  DOI={10.1590/S0006-87051989000100003},  number={1},  journal={Bragantia},  publisher={Instituto Agronômico de Campinas},  author={Zullo, Marco Antonio Teixeira and Azzini, Anisio and Salgado, Antonio Luiz de Barros and Ciaramello, Dirceu},  year={1989},  pages={21–25} }