LEIBOV, M. B. On convergence of conditional means in the norm of BMO space . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 5, p. 644–647, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8817. Acesso em: 6 dec. 2025.