BabenkoV. F.; 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, v. 64, n. 5, p. 597-603, 25 May 2012.