@article{pereira_portilho_henriques_zotin_2014,  title={SnSO<sub>4</sub> as Catalyst for Simultaneous Transesterification and Esterification of Acid Soybean Oil},  volume={25},  ISSN={0103-5053},  url={https://doi.org/10.5935/0103-5053.20140267},  DOI={10.5935/0103-5053.20140267},  number={12},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Pereira, Camila O. and Portilho, Márcio F. and Henriques, Cristiane A. and Zotin, Fatima M. Z.},  year={2014},  month={Dec},  pages={2409–2416} }