TY  - JOUR
AU  - I. T. Kiguradze
AU  - T. Kusano
TI  - On periodic solutions of higher-order nonautonomous ordinary differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1999
SP  - 72
EP  - 78
VL  - 35
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1999_35_1_a10/
LA  - ru
ID  - DE_1999_35_1_a10
ER  -