Husien, Asraa Abdul Jaleel. “A Certain Subclass of Multivalent Analytic Functions With Negative Coefficients for Operator on Hilbert Space”. Earthline Journal of Mathematical Sciences 2, no. 2 (July 25, 2019): 355-364. Accessed November 22, 2024. https://earthlinepublishers.com/index.php/ejms/article/view/52.