HU, Zhenyong; SRIVASTAVA, H. M.; ZHANG, Ying. Sharp starlike and convex radius for the differential operator of analytic functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 76, n. 10, p. 1455–1462, 2025. DOI: 10.3842/umzh.v76i10.7788. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7788. Acesso em: 5 dec. 2025.