“HYBRID ALGORITHM OF CLUSTER ANALYSIS FORMING A PRIORI SPACE DIVISION INTO CLASSES OF KNOWLEDGE IN THE SYSTEMS OF DISTANCE EDUCATING”, Вісник ВПІ, no. 4, pp. 80–87, Sep. 2015, Accessed: Oct. 11, 2026. Available: https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/771