Froněk, Jan, Jaroslav Chlumecký, a Daniel Vymětal. „COVID-19 PANDEMIC VS. PUBLIC TRANSPORT ATTRACTIVENESS - LITERATURE RESEARCH AND SELECTED SOLUTIONS AND RECOMMENDATIONS". Perner’s Contacts 16, no. 1 (červen 30, 2021). Viděno listopad 22, 2024. https://pernerscontacts.upce.cz/index.php/perner/article/view/1667.