%0 Journal Article
%A V. M. Bruk
%T On Invertible Contractions of Quotients Generated by a Differential Expression and by a Nonnegative Operator Function
%J Matematičeskie zametki
%D 2007
%P 652-664
%V 82
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_2007_82_5_a1/
%G ru
%F MZM_2007_82_5_a1