HeP., and ZhangD. “Some Properties of Multivalent Functions Associated With a Certain Operator”. Ukrains’kyi Matematychnyi Zhurnal 65, no. 11 (November 25, 2013): 1580–1584. Accessed November 23, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2538.