%0 Journal Article
%A Đinh Dung
%T Some approximative characteristics of~the~classes of~smooth functions of~several variables in~the~metric of~$\mathscr L_2$
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1979
%P 161-162
%V 34
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_1979_34_4_a9/
%G en
%F RM_1979_34_4_a9