%0 Journal Article
%A M. Sh. Birman
%T The discrete spectrum of the periodic Schr\"odinger operator perturbed by a decreasing potential
%J Algebra i analiz
%D 1996
%P 3-20
%V 8
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_1996_8_1_a0/
%G ru
%F AA_1996_8_1_a0