@article{lopes_2000,  title={L'unification des forces en physique: les premières tentatives},  volume={72},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652000000300004},  DOI={10.1590/S0001-37652000000300004},  number={3},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={LOPES, JOSÉ LEITE},  year={2000},  month={Sep},  pages={311–316} }