TY  - JOUR
AU  - R. G. Koplatadze
TI  - The existence of oscillatory solutions of second-order nonlinear differential equations with retarded argument
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 260
EP  - 262
VL  - 210
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_210_2_a1/
LA  - ru
ID  - DAN_1973_210_2_a1
ER  -