TY  - JOUR
AU  - Guan, Wen
AU  - Wang, Da-Bin
TI  - Existence of infinitely many periodic solutions for second-order nonautonomous Hamiltonian systems
JO  - Electronic Journal of Differential Equations
PY  - 2015
VL  - 2015
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a75/
LA  - en
ID  - EJDE_2015__2015__a75
ER  -