หร่ายเจริญ พ. ด. Challenges in Spectrum Management. Journal of Digital Communications, Bangkok, Thailand, v. 1, n. 1, p. 94–115, 2016. Disponível em: https://so04.tci-thaijo.org/index.php/NBTC_Journal/article/view/119396. Acesso em: 18 may. 2024.