| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 844124 | Nonlinear Analysis: Theory, Methods & Applications | 2008 | 9 Pages |
Abstract
In this paper, we use the Minimax Theorem to investigate periodic solutions of some second order systems, and give some sufficient conditions for the existence for periodic solutions. The results generalize and improve some known results.
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Authors
Fengjuan Meng, Fubao Zhang,