TY  - JOUR
AU  - Yu. S. Kolesov
AU  - V. F. Chaplygin
TI  - On nonoscillation of solutions to singularly disturbed equations of second order
JO  - Doklady Akademii Nauk
PY  - 1971
SP  - 1240
EP  - 1242
VL  - 199
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1971_199_6_a5/
LA  - ru
ID  - DAN_1971_199_6_a5
ER  -