%0 Journal Article
%A M. Sh. Birman
%A D. R. Yafaev
%T The scattering matrix for a~perturbation of a~periodic Schr\"odinger operator by decreasing potential
%J Algebra i analiz
%D 1994
%P 17-39
%V 6
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1994_6_3_a1/
%G ru
%F AA_1994_6_3_a1