TY  - JOUR
AU  - I. S. Sargsyan
TI  - Two-sided asymptotics of the number of proper values of a~nonsemibounded Dirac operator
JO  - Izvestiya. Mathematics 
PY  - 1972
SP  - 1381
EP  - 1420
VL  - 6
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1972_6_6_a8/
LA  - en
ID  - IM2_1972_6_6_a8
ER  -