Paek, K., Kim, J., Hwang, C., Lee, S., & Song, U. (2008). Group-Based Key Management Protocol for Energy Efficiency in Long-Lived and Large-Scale Distributed Sensor Networks. Computing and Informatics, 27(5), 743–756. https://cai.type.sk/content/2008/5/group-based-key-management-protocol-for-energy-efficiency-in-long-lived-and-large-scale-distributed-sensor-networks/