%0 Journal Article
%A Yu. G. Ol'khovskii
%T On smooth relaxation operators
%J Doklady Akademii Nauk
%D 1971
%P 548-550
%V 199
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1971_199_3_a10/
%G ru
%F DAN_1971_199_3_a10