SHARANYA, C; MEENA, M; MONISHA, M; V. RAJENDRAN, Dr; ., . Development of efficient VoIP application using cognitive radio networks. International Journal of Engineering and Technology, [S. l.], v. 7, n. 2.33, p. 419–421, 2018. DOI: 10.14419/ijet.v7i2.33.14200. Disponível em: https://sciencepubco.com/index.php/IJET/article/view/14200.. Acesso em: 13 aug. 2025.