Moorthy, Yamuna, Sakuntala Pillai, and G. Shiny. “Energy-Efficient Multiple Relay Selection in Cognitive Radio Networks”. Defence Science Journal 68, no. 3 (April 16, 2018): 295-299. Accessed April 24, 2024. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/11758.