Hatami, Hadi, and Iman Aghayan. “Traffic Efficiency Evaluation of Elliptical Roundabout Compared With Modern and Turbo Roundabouts Considering Traffic Signal Control”. Promet - Traffic&Transportation 29, no. 1 (February 3, 2017): 1-11. Accessed May 7, 2024. http://traffic.fpz.hr/index.php/PROMTT/article/view/2053.