@article{fernandes_captivo_clímaco_2007,  title={
       },  volume={27},  ISSN={0101-7438},  url={https://doi.org/10.1590/S0101-74382007000300011},  DOI={10.1590/S0101-74382007000300011},  number={3},  journal={Pesquisa Operacional},  publisher={Sociedade Brasileira de Pesquisa Operacional},  author={Fernandes, Sérgio and Captivo, M. Eugénia and Clímaco, João},  year={2007},  pages={607–628} }