AssiriE. Q., and MograM. L. “A Unified Approach for Univalent Functions With Negative Coefficients Using the Hadamard Product”. Ukrains’kyi Matematychnyi Zhurnal 49, no. 9 (September 25, 1997): 1162–1170. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5113.