Artzt's Parabolas
References
Casey, J. A Treatise on the Analytical Geometry of the Point, Line, Circle, and Conic Sections,
Containing an Account of Its Most Recent Extensions with Numerous Examples, 2nd rev.
enl. ed. Dublin: Hodges, Figgis, & Co., p. 458, 1893.Eddy,
R. H. and Fritsch, R. "The Conics of Ludwig Kiepert: A Comprehensive Lesson
in the Geometry of the Triangle." Math. Mag. 67, 188-205, 1994.Gallatly,
W. The
Modern Geometry of the Triangle, 2nd ed. London: Hodgson, p. 42, 1913.