%0 Journal Article
%A M. Yu. Romanova
%T About numerical range of semigroup's generator
%J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
%D 2012
%P 29-32
%V 12
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ISU_2012_12_1_a4/
%G ru
%F ISU_2012_12_1_a4