%0 Journal Article
%A Kh. Kh. Murtazin
%T On nonisolated singular points of the spectrum of elliptic operators
%J Izvestiya. Mathematics 
%D 1976
%P 393-411
%V 10
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1976_10_2_a9/
%G en
%F IM2_1976_10_2_a9