LEILA ISMAIL; KOUSHIK K. BISWAS. Secure and Energy-Efficient Cognitive Radio Architecture for Scalable IoT Networks in Smart Cities. National Journal of RF Circuits and Wireless Systems , [S. l.], v. 3, n. 1, p. 8–15, 2025. DOI: 10.17051/NJRFCS/03.01.02. Disponível em: https://ecejournals.in/index.php/RFMW/article/view/370.. Acesso em: 23 jan. 2026.