S. Bhuvaneswari, V. Azhaharasan. “An Energy Centric Hierarchical Opportunistic Cognitive Routing Protocol for Reliable and Energy Efficient Wireless Sensor Networks”. Journal of Online Engineering Education 17, no. 2 (September 3, 2026): 77–86. Accessed September 4, 2026. https://onlineengineeringeducation.com/index.php/joee/article/view/139.