@article{cattani_bassalo_2016,  title={Gravitational waves observation: brief comments},  volume={38},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2016-0192},  DOI={10.1590/1806-9126-RBEF-2016-0192},  number={4},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Cattani, Mauro and Bassalo, José Maria Filardo},  year={2016},  pages={e4202} }