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On the Existence of Periodic Solutions for Scalar Second Order Differential Equations when only the Asymptotic Behaviour of the Potential is Known
1993
Proceedings of the American Mathematical Society
Preserved Fulltext
Assuming only asymptotic conditions on the potential function, we prove the existence of periodic solutions for equations whose nonlinearity stays below the first curve of Fucik's spectrum.
doi:10.2307/2159926
fatcat:llabxltodfga5g56p7k2fdf3ea