de Souza, Antônio Artur, Daniele Oliveira Xavier, Ewerton Alex Avelar, e Luísa Raad Gervásio. 2016. “Analysis of Health Insurance Providers’ Performance”. Sistemas &Amp; Gestão 11 (2):175-82. https://doi.org/10.20985/1980-5160.2016.v11n2.818.