AN INNOVATIVE DISTANCE LEARNING SYSTEM FOR RUSSIAN LANGUAGE: THE CASE OF GREEK AUDIENCE Статья Kalita O., Tryapelnikov A., Pavlidis G., Chondrogiannis D. 2017 8th International Conference on Information, Intelligence, Systems and Applications, IISA 2017. Institute of Electrical and Electronics Engineers Inc.. Том 2018-January. 2018. С. 1-5