%0 Journal Article
%A S. Z. Levendorskii
%T Asymptotics of the spectrum of problems with constraints
%J Sbornik. Mathematics
%D 1987
%P 77-95
%V 57
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1987_57_1_a4/
%G en
%F SM_1987_57_1_a4