MICHALSKI, Wojciech. Survey of NGN migration profiles deployed by selected carriers in Europe, North America and Asia. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 33, n. 3, p. 60–64, 2008. DOI: 10.26636/jtit.2008.3.888. Disponível em: https://jtit.pl/jtit/article/view/888. Acesso em: 21 aug. 2026.