TY  - JOUR
AU  - A. B. Vasil'eva
TI  - On the theory of periodic solutions of partial differential equations with small parameters
JO  - Differencialʹnye uravneniâ
PY  - 1982
SP  - 889
EP  - 892
VL  - 18
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1982_18_5_a21/
LA  - ru
ID  - DE_1982_18_5_a21
ER  -