TY  - JOUR
AU  - A. Toraev
TI  - Criteria for oscillation and nonoscillation for elliptic equations
JO  - Differencialʹnye uravneniâ
PY  - 1985
SP  - 130
EP  - 140
VL  - 21
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1985_21_1_a16/
LA  - ru
ID  - DE_1985_21_1_a16
ER  -