1. Wikipedia: https://en.wikipedia.org/wiki/Impact_of_the_2019%E2%80%9320_coronavirus_pandemic_on_education. Accessed 9 Apr 2020
2. UNESCO. https://en.unesco.org/themes/education-emergencies/coronavirus-school-closures (2020). Accessed 9 Apr 2020
3. Carlo, J.T.: https://www.texmed.org/template.aspx?id=7808 (2009). Accessed 9 Apr 2020
4. Klaiman, T., Kraemer, J.D., Stoto, M.A.: Variability in school closure decisions in response to 2009 H1N1: a qualitative systems improvement analysis. BMC Public Health. 11, 1–10 (2011)
5. Cauchemez, S., Ferguson, N.M., Wachtel, C., Tegnell, A., Saour, G., Duncan, B., Nicoll, A.: Closure of schools during an influenza pandemic. Lancet Infect. Dis. 9(8), 473–481 (2009). https://doi.org/10.1016/S1473-3099(09)70176-8