%0 Journal Article
%A L. A. Bordag
%T A gap in the energy spectrum of the one-dimensional Dirac operator
%J Zapiski Nauchnykh Seminarov POMI
%D 1977
%P 7-10
%V 70
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1977_70_a0/
%G ru
%F ZNSL_1977_70_a0