TY  - JOUR
AU  - V. N. Laptinskii
TI  - Construction of periodic solutions of differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1984
SP  - 536
EP  - 539
VL  - 20
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1984_20_3_a24/
LA  - ru
ID  - DE_1984_20_3_a24
ER  -