Juma ARS, Al-Fayadh A, Shehab NH. Estimates of Coefficient for Certain Subclasses of k-Fold Symmetric Bi-Univalent Functions. Iraqi Journal of Science [Internet]. 2022 May 25 [cited 2025 Dec. 8];63(5):2155-63. Available from: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/4700