BABENKO, V. F.; KORNEICHUK, N. P.; KOFANOV, V. A.; PICHUGOV, S. A. Inequalities for upper bounds of functionals on the classes $W^r H^{ω}$ and their applications. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 1, p. 66–84, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4398. Acesso em: 5 dec. 2025.