@article{bobbio_1990,  title={A utopia},  ISSN={0102-6445},  url={https://doi.org/10.1590/S0102-64451990000100010},  DOI={10.1590/S0102-64451990000100010},  number={21},  journal={Lua Nova: Revista de Cultura e Política},  publisher={CEDEC},  author={Bobbio, Norberto},  year={1990},  month={Oct},  pages={141–144} }