Zhou, Hongxian; Xu, Wei Thirteen limit cycles for a class of cubic Hamiltonian system with higher-order perturbed terms. (English) Zbl 1160.37017 Appl. Math. Comput. 204, No. 2, 905-913 (2008). Reviewer: Boris V. Loginov (Ul’yanovsk) MSC: 37G15 PDFBibTeX XMLCite \textit{H. Zhou} and \textit{W. Xu}, Appl. Math. Comput. 204, No. 2, 905--913 (2008; Zbl 1160.37017) Full Text: DOI
Wang, Ruiqi; Liu, Zhengrong; Jing, Zhujun Bifurcation set and distribution of limit cycles for a class of seven-order Hamiltonian system with fifteen-order perturbed terms. (English) Zbl 0994.37024 Chaos Solitons Fractals 13, No. 1, 61-69 (2002). MSC: 37G15 34C05 34C23 PDFBibTeX XMLCite \textit{R. Wang} et al., Chaos Solitons Fractals 13, No. 1, 61--69 (2002; Zbl 0994.37024) Full Text: DOI