Mohammed, M. Y., H. B. Kassa, S. Chura, and E. Yohannes. “Green Energy Based Long Term Evolution (LTE) Radio Network Planning for the Case of Semera City”. The International Journal of Science & Technoledge, vol. 3, no. 7, July 2015, http://internationaljournalcorner.com/index.php/theijst/article/view/124514.