TY  - JOUR
AU  - I. T. Kiguradze
TI  - Periodic solutions of systems of nonautonomous ordinary differential equations
JO  - Matematičeskie zametki
PY  - 1986
SP  - 562
EP  - 575
VL  - 39
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1986_39_4_a9/
LA  - ru
ID  - MZM_1986_39_4_a9
ER  -