VAKARCHUK , S. B. On diameters of some classes of analytical functions. II. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 8, p. 1135–1138, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8048. Acesso em: 7 apr. 2025.