HĘCLIK, Karol; DOBROWOLSKI, Lucjan; JAROMIN, Marcin; ZARZYKA, Iwona. A Practical Test of Distance Learning During the COVID-19 Lockdown. International Journal of Research in E-learning, [S. l.], v. 9, n. 1, p. 1–26, 2023. DOI: 10.31261/IJREL.2023.9.1.04. Disponível em: https://journals.us.edu.pl/index.php/IJREL/article/view/14623. Acesso em: 18 apr. 2025.