@article{avellar_milioni_rabello_2005,  title={Modelos DEA com variáveis limitadas ou soma constante},  volume={25},  ISSN={0101-7438},  url={https://doi.org/10.1590/S0101-74382005000100008},  DOI={10.1590/S0101-74382005000100008},  number={1},  journal={Pesquisa Operacional},  publisher={Sociedade Brasileira de Pesquisa Operacional},  author={Avellar, José Virgílio Guedes de and Milioni, Armando Zeferino and Rabello, Tania Nunes},  year={2005},  month={Jan},  pages={135–150} }