Allis, Thiago, et al. “AIRPORT CONCESSIONS IN BRAZIL AND ITS INFLUENCES ON SERVICE QUALITY: THE CASES OF BRASÍLIA AND SÃO PAULO – GUARULHOS AIRPORTS”. Journal of Tourism, Sustainability and Well-Being, vol. 5, no. 4, Dec. 2017, pp. 337-50, https://journals.cinturs.pt/jtsw/article/view/106.