@article{maia_2004, title={Cosmology and gravitation}, volume={34}, ISSN={0103-9733}, url={https://doi.org/10.1590/S0103-97332004000700022}, DOI={10.1590/S0103-97332004000700022}, number={4a}, journal={Brazilian Journal of Physics}, publisher={Sociedade Brasileira de Física}, author={Maia, M. D.}, year={2004}, month={Dec}, pages={1443–1449} }