Koroma, Mohamed, and Ibrahim Abdulai Sawaneh. “A 4G LTE Evolved Packet Core Planning and Deployment in Freetown Sierra Leone”. Asian Journal of Interdisciplinary Research 3, no. 3 (September 30, 2020): 1–18. Accessed May 15, 2024. https://journals.asianresassoc.org/index.php/ajir/article/view/513.