Skorokhodov, D. S. 2009. “On the Existence of a Generalized Asymmetric (α, β)-Spline Whose Average Values Have Equal Minima at Given Points”. Ukrains’kyi Matematychnyi Zhurnal 61 (2), 261-67. https://umj.imath.kiev.ua/index.php/umj/article/view/3017.