TY  - JOUR
AU  - L. A. Bordag
TI  - A gap in the energy spectrum of the one-dimensional Dirac operator
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1977
SP  - 7
EP  - 10
VL  - 70
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1977_70_a0/
LA  - ru
ID  - ZNSL_1977_70_a0
ER  -