Galib Atshan, Waggas, and Salwa Kalf Kazim. “Coefficient Estimates for Some Subclasses of Bi-Univalent Functions Related to M-Fold Symmetry”. Journal of Al-Qadisiyah for Computer Science and Mathematics 11, no. 2 (August 22, 2019): math 81–86. Accessed September 19, 2024. https://jqcsm.qu.edu.iq/index.php/journalcm/article/view/550.