TY  - JOUR
AU  - A. B. Vasil'eva
TI  - Periodic solutions of equations of elliptic type with small parameters
JO  - Differencialʹnye uravneniâ
PY  - 1982
SP  - 2174
EP  - 2178
VL  - 18
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1982_18_12_a8/
LA  - ru
ID  - DE_1982_18_12_a8
ER  -