VAKARCHUK , S. B. Diameters of certain classes of analytical functions. I. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 3, p. 324–333, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8101. Acesso em: 6 dec. 2025.