Prymak AV. Shape-Preserving Smoothing of 3-Convex Splines of Degree 4. Ukr. Mat. Zhurn. [Internet]. 2005 Feb. 25 [cited 2025 Dec. 6];57(2):277–283. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3596