Matrosova, Nataliia D., and Dmitry G. Shtennikov. “THE PERSONIFICATION OF THE USER’S INTERFACE: CLASSIFICATION VS. CLUSTERIZATION OF USERS OF ONLINE COURSES”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 2 (June 20, 2019): 218–221. Accessed June 23, 2024. https://journals.ru.lv/index.php/ETR/article/view/4080.