Wu, Xiaobin, and Wanghao Zhu. “Norm Estimation for Pre-Schwarzian and Schwarzian Derivatives of Some Univalent Functions”. Ukrains’kyi Matematychnyi Zhurnal 77, no. 6 (August 1, 2025): 445–446. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/8599.