TY  - JOUR
AU  - A. I. Bulgakov
AU  - B. A. Sergeev
TI  - Oscillatory properties of solutions of a nonlinear system of second-order ordinary differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1984
SP  - 207
EP  - 214
VL  - 20
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1984_20_2_a2/
LA  - ru
ID  - DE_1984_20_2_a2
ER  -