Singhal, Vishakha, and Shrutika Suri. “Comparative Study of Hierarchical Routing Protocols in Wireless Sensor Networks”. International Journal of Computer Sciences and Engineering 2, no. 5 (May 31, 2014): 142–147. Accessed February 2, 2026. https://ijcse.isroset.org/index.php/j/article/view/168.