Lemeshko, Olha V., Olena V. Yankovets, Volodymyr V. Lemeshko, Andrii V. Yankovets, and Iryna O. Basaraba. 2020. “MASSIVE OPEN ONLINE COURSES AS A MEANS OF BORDER GUARDS’ PROFESSIONAL COMPETENCE DEVELOPMENT”. Information Technologies and Learning Tools 75 (1):279-93. https://doi.org/10.33407/itlt.v75i1.2969.