Moise, D. ., A. . Diaconu, M. D. . Oancea Negescu, and C. C. . Gombos. “Online Education During Pandemic Times: Advantages and Disadvantages”. European Journal of Sustainable Development, vol. 10, no. 4, Oct. 2021, p. 63, doi:10.14207/ejsd.2021.v10n4p63.