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: 10 April 2025).