MYRONYUK, V. V. Kolmogorov widths of the anisotropic Besov classes of periodic functions of many variables. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 68, n. 5, p. 634–643, 2016. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1867. Acesso em: 14 apr. 2025.