R. VALE, Eduardo; CÉLIO B. BRANDÃO, João; GRIVET, Marco. Techniques for Performance Improvement of IMS Voice Calls in UMTS Networks. Journal of Communication and Information Systems, [S. l.], v. 21, n. 3, 2015. DOI: 10.14209/jcis.2006.13. Disponível em: https://jcis.sbrt.org.br/jcis/article/view/282. Acesso em: 25 jun. 2024.