SAHRAEI, Mohammad Ali; KUŞKAPAN, Emre; ÇODUR, Muhammed Yasin. Impact of Covid-19 on Public Transportation Usage and Ambient Air Quality in Turkey. Promet - Traffic&Transportation, [S. l.], v. 33, n. 2, p. 179–191, 2021. DOI: 10.7307/ptt.v33i2.3704. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2929. Acesso em: 26 aug. 2025.