Nalyvaiko, O., A. Khomenko, D. Vereshchak, and D. Poliakov. “Comparative Analysis of Distance Learning Systems in the United Arab Emirates and the United States of America”. Educational Challenges, vol. 26, no. 1, Mar. 2021, pp. 74-85, doi:10.34142/2709-7986.2021.26.1.07.