%0 Journal Article
%A O. A. Veliev
%T Asymptotic formulas for the eigenvalues of a periodic Schr\"odinger operator and the Bethe--Sommerfeld conjecture
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1987
%P 1-15
%V 21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1987_21_2_a0/
%G ru
%F FAA_1987_21_2_a0