@article{ramos_1997,  title={Editorial},  volume={27},  ISSN={0103-9733},  url={https://doi.org/10.1590/S0103-97331997000400015},  DOI={10.1590/S0103-97331997000400015},  number={4},  journal={Brazilian Journal of Physics},  publisher={Sociedade Brasileira de Física},  author={Ramos, J. Galvão},  year={1997},  month={Dec},  pages={523–523} }