%0 Journal Article
%A N. A. Il'yasov
%T On the equivalence of some relations in different metrics between norms, best approximations, and moduli of smoothness of periodic functions and their derivatives
%J Trudy Instituta matematiki i mehaniki
%D 2018
%P 176-188
%V 24
%N 4
%U http://geodesic.mathdoc.fr/item/TIMM_2018_24_4_a13/
%G ru
%F TIMM_2018_24_4_a13