KONOVALOV, V. N. Kolmogorov and linear widths of classes of s-monotone integrable functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 57, n. 12, p. 1633–1652, 2005. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3715. Acesso em: 27 apr. 2025.