TÖRNKVIST, R. .; SHAN, C. . Charging and Billing Architecture for 5G Network. Journal of ICT Standardization, [S. l.], v. 7, n. 2, p. 185–194, 2019. DOI: 10.13052/jicts2245–800X.728. Disponível em: https://journals.riverpublishers.com/index.php/JICTS/article/view/6397. Acesso em: 22 apr. 2026.