The Number and Distributions of Limit Cycles for a Class of Quintic Near-Hamiltonian Systems
Computers & Mathematics with Applications
Limit Cycles for the Kukles system
Journal of Dynamical and Control Systems
On the perturbations of a Hamiltonian system
Computers & Mathematics with Applications
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In this paper we give a criterion for the stability of planar double homoclinic and heteroclinic cycles with one or two saddles in some degenerate case.