Piddubnyi, O. M. “Estimates for Growth of Derivatives of Analytic Functions Along the Radius”. Ukrains’kyi Matematychnyi Zhurnal 65, no. 10 (October 25, 2013): 1420–1426. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2519.