Sahraei, Mohammad Ali, Emre Kuşkapan, and Muhammed Yasin Çodur. “Impact of Covid-19 on Public Transportation Usage and Ambient Air Quality in Turkey”. Promet - Traffic&Transportation 33, no. 2 (March 30, 2021): 179-191. Accessed November 23, 2024. https://traffic.fpz.hr/index.php/PROMTT/article/view/3704.