Wu, Xiaobin, and Wanghao Zhu. “Norm Estimation for Pre-Schwarzian and Schwarzian Derivatives of Some Univalent Functions”. Ukrains’kyi Matematychnyi Zhurnal, vol. 77, no. 6, Aug. 2025, pp. 445–446, https://doi.org/10.3842/umzh.v77i6.8599.