@article{mello_angulo-meza_lacerda_2012,  title={A dea model with a non discritionary variablefor olympic evaluation},  volume={32},  ISSN={0101-7438},  url={https://doi.org/10.1590/S0101-74382012005000004},  DOI={10.1590/S0101-74382012005000004},  number={1},  journal={Pesquisa Operacional},  publisher={Sociedade Brasileira de Pesquisa Operacional},  author={Mello, Jõao Carlos C.B. Soares de and Angulo-Meza, Lidia and Lacerda, Fábio Gomes},  year={2012},  month={Jan},  pages={21–30} }