3 citations · 3 across the 4 of their papers we have counts for
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math.CA2016
On the number of limit cycles for a class of discontinuous quadratic differential systems
Xiuli Cen, Shimin Li, Yulin Zhao
The present paper is devoted to the study of the maximum number of limit cycles bifurcated from the periodic orbits of the quadratic isochronous center $\dot{x}=-y+\frac{16}{3}x^{2…
math.CA2013
On the cyclicity of the period annulus of quadratic Hamiltonian triangle vector field
Yulin Zhao, Cuihong Yang, Xiuli Cen
This paper is concerned with the cyclicity of the period annulus of quadratic Hamiltonian triangle vector field under quadratic perturbations. This problem has been studied by Ilie…