The following publications are possibly variants of this publication:
- Limit cycles of planar polynomial vector fieldsMaoan Han, Jibin Li, Chengzhi Li. scholarpedia, 5(8):9648, 2010. [doi]
- Bifurcations of planar Hamiltonian systems with impulsive perturbationZhaoping Hu, Maoan Han, Valery G. Romanovski. amc, 219(12):6733-6742, 2013. [doi]
- Bifurcation of Limit Cycles in Z::10::-Equivariant Vector Fields of Degree 9Sharon Wang, Pei Yu, Jibin Li. IJBC, 16(8):2309-2324, 2006. [doi]