Some application of elements of the theory of finite boundaries to solving problems in mathematical analysis. Scientific Journal of the National pedagogical Dragomanov University. Series 2. Computer-Oriented Learning Systems, [S. l.], n. 21 (28), p. 30–35, 2019. DOI: 10.31392/NPU-nc.series2.2019.21(28).05. Disponível em: https://sj.udu.edu.ua/index.php/kosn/article/view/18. Acesso em: 2 feb. 2026.