ŠEBO, M.; KRAJINČÁK, E. Impact of Four Coronavirus Waves on Higher Education: Comparative study. R&E-SOURCE, [S. l.], n. s1, p. 128–143, 2023. DOI: 10.53349/resource.2023.is1.a1197. Disponível em: https://journal.ph-noe.ac.at/index.php/resource/article/view/1197. Acesso em: 20 mai. 2024.