TY  - JOUR
AU  - V. N. Laptinskii
AU  - V. L. Titov
TI  - On the theory of periodic solutions of semilinear differential systems
JO  - Differencialʹnye uravneniâ
PY  - 1999
SP  - 1036
EP  - 1045
VL  - 35
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1999_35_8_a5/
LA  - ru
ID  - DE_1999_35_8_a5
ER  -