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Rojas, David Asymptotic development of an integral operator and boundedness of the criticality of potential centers. (English) Zbl 1443.34029 J. Dyn. Differ. Equations 32, No. 2, 665-704 (2020). MSC: 34C07 34C23 34C25 34C05 PDFBibTeX XMLCite \textit{D. Rojas}, J. Dyn. Differ. Equations 32, No. 2, 665--704 (2020; Zbl 1443.34029) Full Text: DOI arXiv Link
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Yu, Jianshe Subharmonic solutions with prescribed minimal period of a class of nonautonomous Hamiltonian systems. (English) Zbl 1361.34041 J. Dyn. Differ. Equations 20, No. 4, 787-796 (2008). MSC: 34C25 37J45 PDFBibTeX XMLCite \textit{J. Yu}, J. Dyn. Differ. Equations 20, No. 4, 787--796 (2008; Zbl 1361.34041) Full Text: DOI
Yu, Jianshe; Long, Yuhua; Guo, Zhiming Subharmonic solutions with prescribed minimal period of a discrete forced pendulum equation. (English) Zbl 1067.39022 J. Dyn. Differ. Equations 16, No. 2, 575-586 (2004). Reviewer: Ahmed Hegazi (Mansoura) MSC: 39A11 39A12 70J35 PDFBibTeX XMLCite \textit{J. Yu} et al., J. Dyn. Differ. Equations 16, No. 2, 575--586 (2004; Zbl 1067.39022) Full Text: DOI