%0 Journal Article
%A V. V. Ivanov
%T Perturbation of uniformly summable semigroups of operators
%J Doklady Akademii Nauk
%D 1980
%P 269-273
%V 250
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1980_250_2_a1/
%G ru
%F DAN_1980_250_2_a1