Abdullayev, F. G., & Özkartepe, N. P. (2012). On the improvement of the rate of convergence of the generalized Bieberbach polynomials in domains with zero angles. Ukrains’kyi Matematychnyi Zhurnal, 64(5), 582-596. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/2599