Several Subclasses of r-Fold Symmetric Bi-Univalent Functions possess Coefficient Bounds . Iraqi Journal of Science, [S. l.], v. 63, n. 12, p. 5438–5446, 2022. DOI: 10.24996/ijs.2022.63.12.29. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/5614.. Acesso em: 7 apr. 2025.