@article{01336308, title = {Hyperbolas and orthologic triangles.}, journal = {Mathematica Pannonica}, volume = {8}, year = {1997}, pages = {201-214}, zbl = {0929.51013}, language = {en}, url = {http://dml.mathdoc.fr/item/01336308} }
Čerin, Z. Hyperbolas and orthologic triangles.. Mathematica Pannonica, Tome 8 (1997) pp. 201-214. http://gdmltest.u-ga.fr/item/01336308/