%0 Journal Article
%A V. Ya. Stetsenko
%T An estimate for the spectrum of some classes of linear operators
%J Doklady Akademii Nauk
%D 1964
%P 1054-1057
%V 157
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1964_157_5_a10/
%G ru
%F DAN_1964_157_5_a10