Csima, G. and Szirmai, J. (2019) “Isoptic curves of generalized conic sections in the hyperbolic plane”, Ukrains’kyi Matematychnyi Zhurnal, 71(12), pp. 1684-1698. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2287 (Accessed: 29March2024).