TY  - JOUR
AU  - Z. M. Kochetkova
TI  - The isochrony of a certain system of differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1971
SP  - 359
EP  - 362
VL  - 7
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1971_7_2_a17/
LA  - ru
ID  - DE_1971_7_2_a17
ER  -