%0 Journal Article
%A D. L. Berman
%T On the theory of semigroups of linear operators
%J Doklady Akademii Nauk
%D 1963
%P 9-11
%V 153
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_153_1_a0/
%G ru
%F DAN_1963_153_1_a0