%0 Journal Article
%A T. A. Suslina
%T Descrete spectrum of the two-dimensional periodic second order elliptic operator perturbed by a~decaying potential. II.~Internal gaps
%J Algebra i analiz
%D 2003
%P 128-189
%V 15
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AA_2003_15_2_a2/
%G ru
%F AA_2003_15_2_a2