@article{possas_1998,  title={Concorrência e elementos subjetivos},  volume={18},  ISSN={0101-3157},  url={https://doi.org/10.1590/0101-31571998-1323},  DOI={10.1590/0101-31571998-1323},  number={4},  journal={Brazilian Journal of Political Economy},  publisher={Centro de Economia Política},  author={POSSAS, MARIA SILVIA},  year={1998},  month={Oct},  pages={595–611} }