@article{pérez-castrillo_sotomayor_2003,  title={A selling mechanism},  volume={57},  ISSN={0034-7140},  url={https://doi.org/10.1590/S0034-71402003000400012},  DOI={10.1590/S0034-71402003000400012},  number={4},  journal={Revista Brasileira de Economia},  publisher={Fundação Getúlio Vargas},  author={Pérez-Castrillo, David and Sotomayor, Marilda},  year={2003},  month={Oct},  pages={931–952} }