“Some Application of Elements of the Theory of Finite Boundaries to Solving Problems in Mathematical Analysis”. Scientific Journal of the Dragomanov Ukrainian State University Series 2 Computer-Oriented Learning Systems, no. 21 (28) (June 5, 2019): 30–35. Accessed April 9, 2026. https://sj.udu.edu.ua/index.php/kosn/article/view/18.