%0 Journal Article
%A Yu. E. Karpeshina
%T Perturbation theory for the Schr\"odinger operator with periodic nonsmooth potential
%J Doklady Akademii Nauk
%D 1989
%P 1055-1059
%V 309
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1989_309_5_a6/
%G ru
%F DAN_1989_309_5_a6