TY  - JOUR
AU  - E. E. Tyrtyshnikov
TI  - New theorems on the distribution of eigenvalues and singular
JO  - Doklady Akademii Nauk
PY  - 1993
SP  - 300
EP  - 303
VL  - 333
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1993_333_3_a7/
LA  - ru
ID  - DAN_1993_333_3_a7
ER  -