%0 Journal Article
%A Yu. G. Shondin
%T Perturbations of elliptic operators on high codimension subsets and the extension theory on an indefinite metric space
%J Zapiski Nauchnykh Seminarov POMI
%D 1995
%P 246-292
%V 222
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1995_222_a9/
%G ru
%F ZNSL_1995_222_a9