TY  - JOUR
AU  - G. L. Yuzbashev
TI  - Family of periodic solutions of a system of second order differential equations without dissipation
JO  - Differencialʹnye uravneniâ
PY  - 1974
SP  - 567
EP  - 568
VL  - 10
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1974_10_3_a25/
LA  - ru
ID  - DE_1974_10_3_a25
ER  -