TY  - JOUR
AU  - Fei, Guihua
TI  - On periodic solutions of superquadratic Hamiltonian systems
JO  - Electronic Journal of Differential Equations
PY  - 2002
VL  - 2002
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a90/
LA  - en
ID  - EJDE_2002__2002__a90
ER  -