@article{singer_2012,  title={O capital e a armadilha da dívida},  ISSN={0101-3300},  url={https://doi.org/10.1590/S0101-33002012000200011},  DOI={10.1590/S0101-33002012000200011},  number={93},  journal={Novos estudos CEBRAP},  publisher={Centro Brasileiro de Análise e Planejamento},  author={Singer, Paul},  year={2012},  month={Jul},  pages={169–178} }