CHEN Guo-Wei, YANG Shen-An. The Topological Classification of Plane Phase Diagram of\=a Class |of Quintic Hamiltonian System[J].Acta mathematica scientia,Series A, 2004, 4(6): 737-751.
[1]李继彬,黄其明,Bifurcations of limit cycles forming compound eyesin the cubic system, Chin Ann of Math 1987, 813(4): 391-403
[2]Guowei Chen, Yuanbin Wu, Xinan Yang. The number of limit cyclesfor a class of quintic hamiltonian systems under quintic perturbations. Journa
l of the Anstratian Mathematical Society, 2002,73: 37-53