Motornyi, V.P. (2002) “On One-Sided Approximation of Functions with Regard for the Location of a Point on an Interval”, Ukrains’kyi Matematychnyi Zhurnal, 54(5), pp. 666–669. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4105 (Accessed: 14 April 2025).