@article{macedo_abreu_tavares_alves_zara_rubim_suarez_2006,  title={New heterogeneous metal-oxides based catalyst for vegetable oil trans-esterification},  volume={17},  ISSN={0103-5053},  url={https://doi.org/10.1590/S0103-50532006000700014},  DOI={10.1590/S0103-50532006000700014},  number={7},  journal={Journal of the Brazilian Chemical Society},  publisher={Sociedade Brasileira de Química},  author={Macedo, Caio C. S. and Abreu, Frederique R. and Tavares, André P. and Alves, Melquizedeque B. and Zara, Luiz F. and Rubim, Joel C. and Suarez, Paulo A. Z.},  year={2006},  month={Nov},  pages={1291–1296} }