Omer, Baran R., and Sherzad W. Khalid. “An Improvement of Three Leg Signalized Intersections in Duhok City Kurdistan-Iraq”. Academic Journal of Nawroz University 7, no. 4 (December 21, 2018): 87–92. Accessed May 3, 2024. https://journals.nawroz.edu.krd/index.php/ajnu/article/view/275.