FEDUNYK-YAREMCHUK, O.V.; HEMBARS’KA, S.B.; SOLICH, K.V. Approximation of classes of periodic functions of several variables with given majorant of mixed moduli of continuity. Carpathian Mathematical Publications, [S. l.], v. 15, n. 2, p. 468–481, 2023. DOI: 10.15330/cmp.15.2.468-481. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/7140. Acesso em: 9 may. 2024.