@article{contador_ferreira_simões_souza_2012,  title={It outsourcing: methodology for selecting suppliers criterion for competitive advantage},  volume={9},  ISSN={1807-1775},  url={https://doi.org/10.1590/S1807-17752012000100008},  DOI={10.1590/S1807-17752012000100008},  number={1},  journal={JISTEM - Journal of Information Systems and Technology Management},  publisher={TECSI Laboratório de Tecnologia e Sistemas de Informação - FEA/USP},  author={Contador, José Celso and Ferreira, Ademir Antonio and Simões, Sérgio Alexandre and Souza, Wilson José},  year={2012},  month={Jan},  pages={123–146} }