TY  - JOUR
AU  - Yu. K. Metlyaev
TI  - The periodic solutions of a certain differential equation
JO  - Differencialʹnye uravneniâ
PY  - 1970
SP  - 1824
EP  - 1830
VL  - 6
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1970_6_10_a9/
LA  - ru
ID  - DE_1970_6_10_a9
ER  -