Geodesic
Existence of infinitely many periodic solutions for second-order Hamiltonian systems
Electronic journal of differential equations, Tome 2013 (2013)
By using the variant of the fountain theorem, we study the existence of infinitely many periodic solutions for a class of superquadratic nonautonomous second-order Hamiltonian systems.
Classification : 34C25, 58E05
Keywords: periodic solution, Hamiltonian systems, critical point, variational method 
@article{EJDE_2013__2013__a94,
     author = {Gu,  Hua and An,  Tianqing},
     title = {Existence of infinitely many periodic solutions for second-order {Hamiltonian} systems},
     journal = {Electronic journal of differential equations},
     year = {2013},
     volume = {2013},
     zbl = {1293.34055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2013__2013__a94/}
}
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Gu,  Hua; An,  Tianqing. Existence of infinitely many periodic solutions for second-order Hamiltonian systems. Electronic journal of differential equations, Tome 2013 (2013). http://geodesic.mathdoc.fr/item/EJDE_2013__2013__a94/