TY  - JOUR
AU  - Fei,  Guihua
TI  - Nontrivial periodic solutions of asymptotically linear Hamiltonian systems
JO  - Electronic journal of differential equations
PY  - 2001
VL  - 2001
UR  - http://geodesic.mathdoc.fr/item/EJDE_2001__2001__a36/
LA  - en
ID  - EJDE_2001__2001__a36
ER  -