Salim, Noora. “Cognitive Radio Applications of Spectrum Occupancy in HILLAH-IRQ Measurement and Analysis”. International Journal of Discoveries and Innovations in Applied Sciences 3, no. 3 (March 15, 2023): 17–23. Accessed July 3, 2024. https://openaccessjournals.eu/index.php/ijdias/article/view/1921.