GRAH, B.; PENGER, S. COVID-19 and the Challenges of Transition to Online Learning. ENTRENOVA - ENTerprise REsearch InNOVAtion, [S. l.], v. 7, n. 1, p. 131–145, 2022. DOI: 10.54820/CFNS6611. Disponível em: https://hrcak.srce.hr/ojs/index.php/entrenova/article/view/20243. Acesso em: 2 may. 2024.