PAVLIDIS, K.; HAWKINS, W. Affordability and 21st century telecommunications services. Journal of Telecommunications and the Digital Economy, [S. l.], v. 3, n. 2, p. 27–36, 2015. DOI: 10.18080/jtde.v3n2.10. Disponível em: https://jtde.telsoc.org/index.php/jtde/article/view/10. Acesso em: 27 nov. 2024.