Gutlyansky , V. Ya., and S. A. Kopanev. “On Conformal Mapping of a Circle onto Convex Domains”.
Ukrains’kyi Matematychnyi Zhurnal 44, no. 10 (October 1, 1992): 1330–1336. Accessed April 27, 2025.
https://umj.imath.kiev.ua/index.php/umj/article/view/8228.