FEDUNYK-YAREMCHUK, O.V.; HEMBARS’KA, S.B. Approximation of classes of periodic functions of several variables with given majorant of mixed moduli of continuity. Carpathian Mathematical Publications, [S. l.], v. 13, n. 3, p. 838–850, 2021. DOI: 10.15330/cmp.13.3.838-850. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/5641. Acesso em: 23 apr. 2024.