Яценко ВВ. CONCEPTUAL PRINCIPLES OF ASSESSING THE QUALITY OF DISTANCE LEARNING: AN IMPORTANT COMPONENT OF THE SOCIALLY RESPONSIBLE ACTIVITIES OF HIGHER EDUCATION INSTITUTIONS IN THE EDUCATIONAL SERVICES MARKET. jseconres [Internet]. 2023Jul.13 [cited 2025Apr.26];(6):142-7. Available from: http://167.235.6.87:8089/index.php/jseconres/article/view/1215