Kavitha, T., and Dr.D. Sridharan. “Optimal Resource Key Management Protocol for Clustered Heterogeneous Wireless Sensor Networks”. Malaysian Journal of Computer Science 26, no. 3 (September 1, 2013): 211–231. Accessed July 1, 2024. http://borneojournal.um.edu.my/index.php/MJCS/article/view/6775.