GREGORY, M. A. Telecommunications Market Evolution. Journal of Telecommunications and the Digital Economy, [S. l.], v. 4, n. 4, p. ii, 2017. DOI: 10.18080/jtde.v4n4.80. Disponível em: https://mail.jtde.telsoc.org/index.php/jtde/article/view/80. Acesso em: 6 jul. 2024.