PRASAD, M. Satya. Birds’ Eye View on Mobile Number Portability. International Journal of Scientific Research in Network Security and Communication, [S. l.], v. 8, n. 2, p. 28–35, 2020. Disponível em: https://ijsrnsc.org/index.php/j/article/view/198. Acesso em: 23 feb. 2025.