System Transformation of the Mathematical Model for the Process of Forgetting the Knowledge Obtained by a Student at Lecture and the Method of its Identification. Вісник ВПІ [Internet]. 2020 Apr. 30 [cited 2026 Oct. 12];(2):50-7. Available from: https://visnyk.vntu.edu.ua/index.php/visnyk/article/view/2480