@article{fonseca_mello_gomes_meza_2010,  title={Uniformization of frontiers in non-radial ZSG-DEA models: an application to airport revenues},  volume={30},  ISSN={0101-7438},  url={https://doi.org/10.1590/S0101-74382010000100009},  DOI={10.1590/S0101-74382010000100009},  number={1},  journal={Pesquisa Operacional},  publisher={Sociedade Brasileira de Pesquisa Operacional},  author={Fonseca, Aline Bandeira de Mello and Mello, João Carlos Correia Baptista Soares de and Gomes, Eliane Gonçalves and Meza, Lidia Angulo},  year={2010},  month={Jan},  pages={175–193} }