%0 Journal Article
%A N. G. Makarov
%T Perturbations of normal operators and stability of the continuous spectrum
%J Izvestiya. Mathematics 
%D 1987
%P 535-558
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1987_29_3_a2/
%G en
%F IM2_1987_29_3_a2