@article{vieira_bezerra_2014,  title={Lagrangian formulation of Newtonian cosmology},  volume={36},  ISSN={1806-1117},  url={https://doi.org/10.1590/S1806-11172014000300010},  DOI={10.1590/S1806-11172014000300010},  number={3},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Vieira, H.S. and Bezerra, V.B.},  year={2014},  month={Jul},  pages={3310} }