MR2086063: Wu, Xian Saddle point characterization and multiplicity of periodic solutions of non-autonomous second-order systems. Nonlinear Anal. 58 (2004), no. 7-8, 899--907.

Maria Letizia Bertotti

Research output: Other contribution

Original languageUndefined/Unknown
Publication statusPublished - 2005
Externally publishedYes

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