BabenkoV. F., and KovalenkoO. V. “On the Dependence of the Norm of a Function on the Norms of Its Derivatives of Orders $k$ , $r - 2$ and $r , 0 < K &lt; R - 2$”. Ukrains’kyi Matematychnyi Zhurnal 64, no. 5 (May 25, 2012): 597-603. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2600.