Stupel, Moshe, Avi Sigler, and Shula Weissman. “Finding the Location of the Axes, the Vertices and the Foci of a Parabola, an Ellipse and a Hyperbola Using a Straightedge and a Compass”. Advances in Mathematics and Computer Science Vol. 4 (November 20, 2019): 85-90. Accessed June 19, 2026. https://stm1.bookpi.org/index.php/amacs-v4/article/view/644.