@article{mafra_paula_ozaki_patarroyo_1997,  title={Useful Web sites for researchers studying proteins},  volume={30},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X1997000300001},  DOI={10.1590/S0100-879X1997000300001},  number={3},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Mafra, C.L. and Paula, S.O. and Ozaki, L.S. and Patarroyo, J.H.},  year={1997},  month={Mar},  pages={283–288} }