Gutlyanskii, V. Ya., and A. O. Zaidan. “On Conformal Mapping of Polygonal Regions”. Ukrains’kyi Matematychnyi Zhurnal 45, no. 11 (November 25, 1993): 1484–1494. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/5955.