TY  - JOUR
AU  - A. Toraev
TI  - Oscillation of elliptic operators and the structure of their
JO  - Doklady Akademii Nauk
PY  - 1984
SP  - 306
EP  - 309
VL  - 279
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1984_279_2_a10/
LA  - ru
ID  - DAN_1984_279_2_a10
ER  -