%0 Journal Article
%A È. M. Saak
%T On the approximation of solutions to elliptic equations together with derivatives up to the boundary
%J Doklady Akademii Nauk
%D 1973
%P 277-279
%V 208
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1973_208_2_a3/
%G ru
%F DAN_1973_208_2_a3