The switch to online teaching during the first COVID-19 lockdown: A comparative study at four European universities. Journal of University Teaching and Learning Practice, [S. l.], v. 18, n. 5, 2021. DOI: 10.53761/1.18.5.10. Disponível em: https://open-publishing.org/journals/index.php/jutlp/article/view/497.. Acesso em: 20 sep. 2024.