%0 Journal Article
%A N. N. Yakovlev
%T On the spectrum of the Schr\"odinger operator with small periodic potential in dimensions two and three
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1987
%P 77-79
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1987_2_a21/
%G ru
%F VMUMM_1987_2_a21