A second look at the first result of Landesman-Lazer type.
Lazer, Alan C. (2000)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Lazer, Alan C. (2000)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Feng, Zhaosheng (2000)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Amster, P., de Nápoli, P., Mariani, M.C. (2005)
Portugaliae Mathematica. Nova Série
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Mei-Lan Tang, Xin-Ge Liu, Xin-Bi Liu (2009)
Applications of Mathematics
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The paper deals with the existence of periodic solutions for a kind of non-autonomous time-delay Rayleigh equation. With the continuation theorem of the coincidence degree and a priori estimates, some new results on the existence of periodic solutions for this kind of Rayleigh equation are established.
Ma, Shiwang, Wang, Zhicheng (1999)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Wang, Genqiang, Yan, Jurang (2000)
Portugaliae Mathematica
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Fečkan, Michael (2003)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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