PATIL, A. B.; SHABA, T. G. Sharp initial coefficient bounds and the Fekete–Szegö problem for some certain subclasses of analytic and bi-univalent functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 75, n. 2, p. 198–206, 2023. DOI: 10.37863/umzh.v75i2.6602. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/6602. Acesso em: 14 apr. 2025.