%0 Journal Article
%A S. V. Petras
%T Continuous dependence of poles of the scattering matrix on coefficients of an elliptic operator
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 1983
%P 132-136
%V 159
%I mathdoc
%U http://geodesic.mathdoc.fr/item/TM_1983_159_a7/
%G ru
%F TM_1983_159_a7