Hussein , Dhirgam Allawy Hussein, and Sahar Jaafar Mahmood. “Coefficient Estimates for Some Subclasses of M-Fold Symmetric Bi-Univalent Functions Defined by Linear Operator”. JOURNAL OF ADVANCES IN MATHEMATICS 20 (March 25, 2021): 115–120. Accessed March 29, 2024. https://rajpub.com/index.php/jam/article/view/8976.