%0 Journal Article
%A N. P. Korneichuk
%T Duality of extremal problems in function spaces and approximation of functions
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1985
%P 195-196
%V 40
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1985_40_4_a39/
%G en
%F RM_1985_40_4_a39