%0 Journal Article
%A M. Sh. Birman
%A V. A. Sloushch
%T Two-Sided Estimates for the Trace of the Difference of Two Semigroups
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 2009
%P 26-32
%V 43
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_2009_43_3_a2/
%G ru
%F FAA_2009_43_3_a2