TY  - JOUR
AU  - A. D. Morozov
TI  - The complete qualitative investigation of Duffing's equation
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 241
EP  - 255
VL  - 12
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_2_a6/
LA  - ru
ID  - DE_1976_12_2_a6
ER  -