%0 Journal Article
%A S. A. Smolyak
%T $\varepsilon$-entropy of the classes $E_s^{\alpha,k}(B)$ and $W_s^\alpha(B)$ in the metric of $L_2$
%J Doklady Akademii Nauk
%D 1960
%P 30-33
%V 131
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1960_131_1_a6/
%G ru
%F DAN_1960_131_1_a6