Balendr, Andrii V., Vasyl O. Korolov, Oleksandr V. Adamchuk, Anatolii V. Iakymchuk, Serhii V. Sinkevych, and Ihor H. Bloshchynskyi. “BORDER GUARDS’ DISTANCE LEARNING DEVELOPMENT IN THE EUROPEAN UNION COUNTRIES”. Information Technologies and Learning Tools 71, no. 3 (June 29, 2019): 305–319. Accessed April 28, 2024. https://journal.iitta.gov.ua/index.php/itlt/article/view/2749.