KONOVALOV, V. N. Shape-preserving kolmogorov widths of classes of s-monotone integrable functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 7, p. 901–926, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3808. Acesso em: 5 dec. 2025.