POZHARSKA, K.V.; ROMANYUK, A.S.; YANCHENKO, S.Ya. Estimates of the characteristics of nonlinear approximation of classes of periodic functions of many variables. Carpathian Mathematical Publications, [S. l.], v. 17, n. 2, p. 447–460, 2025. DOI: 10.15330/cmp.17.2.447-460. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/9464. Acesso em: 15 apr. 2026.