STASYUK, S. A. Kolmogorov Widths for Analogs of the Nikol’skii–Besov Classes with Logarithmic Smoothness. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 67, n. 11, p. 1579–1584, 2015. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2092. Acesso em: 5 dec. 2025.