%0 Journal Article
%A A. G. Baskakov
%T Spectral analysis of differential operators with unbounded operator-valued coefficients, difference relations and semigroups of difference relations
%J Izvestiya. Mathematics 
%D 2009
%P 215-278
%V 73
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_2009_73_2_a0/
%G en
%F IM2_2009_73_2_a0