[1]
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 $r , 0 < k &lt; r - 2$”, Ukr. Mat. Zhurn., vol. 64, no. 5, pp. 597-603, May 2012.