GARG, P. K. .; DUA, T. R. .; CHANDRA, A. . Spectrum Challenges for Modern Mobile Services. Journal of ICT Standardization, [S. l.], v. 1, n. 2, p. 137–158, 2013. DOI: 10.13052/jicts2245-800X.12a2. Disponível em: https://journals.riverpublishers.com/index.php/JICTS/article/view/6609. Acesso em: 20 oct. 2024.