Title of article :
Existence of periodic solutions to second-order Hamiltonian systems with potential indefinite in sign
Original Research Article
Author/Authors :
Yuan-Tong Xu، نويسنده , , ZHIMING GUO and XINGFU ZOU، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Keywords :
Periodic solutions , Hamiltonian systems , linking , critical points
Journal title :
Nonlinear Analysis Theory, Methods & Applications
Journal title :
Nonlinear Analysis Theory, Methods & Applications