Cherneі N. I. Criterion of stable convexity of a region in one-sheeted conformal mappings. I . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 18, n. 1, p. 86–91, 1966. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8655. Acesso em: 7 apr. 2025.