TY  - JOUR
AU  - M. T. Terekhin
TI  - Periodic solutions of a certain nonautonomous system of differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1966
SP  - 778
EP  - 782
VL  - 2
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1966_2_6_a5/
LA  - ru
ID  - DE_1966_2_6_a5
ER  -