Brodovich, .M.T. (2003) “On One Criterion for the Holomorphy of an Arbitrary Mapping of a Plane Domain into a Plane”, Ukrains’kyi Matematychnyi Zhurnal, 55(9), pp. 1155–1166. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3989 (Accessed: 10 April 2025).