%0 Journal Article
%A I. G. Tsar'kov
%T Extension theorems and approximation of functions in Banach
%J Doklady Akademii Nauk
%D 1994
%P 740-741
%V 338
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1994_338_6_a5/
%G ru
%F DAN_1994_338_6_a5