%0 Journal Article
%A V. S. Kryuchkov
%T On the smoothness of the symbol of the Calderon--Zygmund singular integral operator
%J Doklady Akademii Nauk
%D 1982
%P 540-544
%V 267
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1982_267_3_a5/
%G ru
%F DAN_1982_267_3_a5