BULKOVÁ, Z.; GAŠPARÍK, J.; DEDÍK, M.; KAMPF, R. Implementation of COVID-19 measures in railway operation in the Slovak Republic. Cognitive Sustainability, [S. l.], v. 1, n. 2, 2022. DOI: 10.55343/cogsust.18. Disponível em: http://cogsust.com/index.php/real/article/view/18. Acesso em: 25 sep. 2022.