H. Afzal, M. R. Mufti, K. T. Ahmed, M. Rehman, M. Yousaf, and D. Qaseem, “Performance Modeling and Analysis of Secure Registration Process of CPEs in IEEE 802.22 WRAN Cognitive Radio Network”, The Nucleus, vol. 57, no. 4, pp. 141–149, Sep. 2021.