IgnatenkoV. F. (1998) “Diametral theory of algebraic surfaces and geometric theory of invariants of groups generated by reflections. III”, Ukrains’kyi Matematychnyi Zhurnal, 50(10), pp. 1324–1340. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4819 (Accessed: 27July2024).