@article{zini jr._1991,  title={A metodologia enganosa do déficit operacional},  volume={11},  ISSN={0101-3157},  url={https://doi.org/10.1590/0101-31571991-0872},  DOI={10.1590/0101-31571991-0872},  number={3},  journal={Brazilian Journal of Political Economy},  publisher={Centro de Economia Política},  author={ZINI JR., ÁLVARO ANTÔNIO},  year={1991},  month={Jul},  pages={418–425} }