KORNEICHUK, N. P. On linear widths of classes $H^ω$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 48, n. 9, p. 1255–1264, 1996. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5239. Acesso em: 5 dec. 2025.