Chukhray, Andrey Grigoriyevich, Anatoliy Stepanovich Kulik, and Marina Chukhray. “Diagnostic Models of Intelligent Tutor System for Teaching Skills to Solve Algebraic Equations”. International Journal of Emerging Technologies in Learning (iJET) 2, no. 1 (October 23, 2006). Accessed November 24, 2024. https://online-journals.org/index.php/i-jet/article/view/68.