1. Palazzolo, T., Lemke, A., Zhang, C., Saad, S., Reynolds, R.G., O'Shea, J.: DeepDive: The use of virtual worlds to create an ethnography of an ancient civilization. HCI International (2021)
2. UNESCO, COVID-19 Educational Disruption and Response. 22 Dec 2020. https://en.unesco.org/themes/education-emergencies/coronavirus-school-closures
3. Gardener, L.: COVID-19 Has Forced Higher Edu to Pivot to Online Learning. Here Are 7 Takeaways So Far. The Chronicles of Higher Education (2020)
4. Kelly, R.: 4,000-Plus U.S. Higher Ed Institutions Impacted by COVID-19; More Than 25 Million Students Affected. Campus Technology (2020)
5. Ally, M.: Foundations of educational theory for online learning. In: Theory and Practice of Online Learning, Athabasca University, Athabasca (2004)