Mascarenhas, B. V., G. M. R. Borille, and C. J. P. Alves. “Methodology for Assessing the Service Level Offered in the Check-in Area of Brazilian Regional Airports”. Transportes, vol. 28, no. 5, Dec. 2020, pp. 83-98, doi:10.14295/transportes.v28i5.2083.