TY  - JOUR
AU  - V. N. Gorbuzov
TI  - On a second-order differential system and its periodic solutions
JO  - Differencialʹnye uravneniâ
PY  - 1994
SP  - 1487
EP  - 1497
VL  - 30
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1994_30_9_a1/
LA  - ru
ID  - DE_1994_30_9_a1
ER  -