Miteva, Dafinka, and Eliza Stefanova. “EAnalytics: A Model of a Learning Analytics Visualization System”. Ann. Sofia Univ. Fac. Math. and Inf. 109 (December 12, 2022): 99–119. Accessed January 15, 2025. https://admin.uni-sofia.bg/index.php/fmi/article/view/555.