Berezytskyi, Mykola M., and Vasyl P. Oleksyuk. “MASSIVE OPEN ONLINE COURSES AS A STAGE IN THE DEVELOPMENT OF E-LEARNING”. Information Technologies and Learning Tools, vol. 56, no. 6, Dec. 2016, pp. 51-63, https://doi.org/10.33407/itlt.v56i6.1479.