Zabolotniaia, Mariia, et al. “Retracted Article: Use of the LMS Moodle for an Effective Implementation of an Innovative Policy in Higher Educational Institutions”. International Journal of Emerging Technologies in Learning (iJET), vol. 15, no. 13, July 2020, pp. pp. 172-189, doi:10.3991/ijet.v15i13.14945.