Petunin, Y.I. and Rublev В.V. (1998) “Minimum-Area ellipse containing a finite set of points. II”, Ukrains’kyi Matematychnyi Zhurnal, 50(8), pp. 1098–1105. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4859 (Accessed: 5 December 2025).