%0 Journal Article
%A M. Sh. Birman
%T Scattering problems for differential operators with perturbation of the space
%J Izvestiya. Mathematics 
%D 1971
%P 459-474
%V 5
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1971_5_2_a9/
%G en
%F IM2_1971_5_2_a9