Adnan, Mahmood, Hushairi Zen, and Al - Khalid Othman. “Vertical Handover Decision Processes for Fourth Generation Heterogeneous Wireless Networks”. Asian Journal of Applied Sciences 1, no. 5 (December 21, 2013). Accessed June 24, 2024. https://ajouronline.com/index.php/AJAS/article/view/713.