Yagasaki, Kazuyuki Higher-order Melnikov method and chaos for two-degree-of-freedom Hamiltonian systems with saddle-centers. (English) Zbl 1213.37092 Discrete Contin. Dyn. Syst. 29, No. 1, 387-402 (2011). Reviewer: Dorin Andrica (Riyadh) MSC: 37J45 70H07 70H09 34C37 34E10 37J30 PDFBibTeX XMLCite \textit{K. Yagasaki}, Discrete Contin. Dyn. Syst. 29, No. 1, 387--402 (2011; Zbl 1213.37092) Full Text: DOI
Yagasaki, Kazuyuki Melnikov’s method and codimension-two bifurcations in forced oscillations. (English) Zbl 1027.34048 J. Differ. Equations 185, No. 1, 1-24 (2002). Reviewer: Pedro J.Torres (Granada) MSC: 34C23 34E10 34C25 PDFBibTeX XMLCite \textit{K. Yagasaki}, J. Differ. Equations 185, No. 1, 1--24 (2002; Zbl 1027.34048) Full Text: DOI