- [21]Xie Jianhua, Tang Yilei*, Duan Sen, Chen Hebai.Global dynamics of a mechanical system with fry friction[J].Journal of Differential Equations, 2018, 265: 5490-5519.
- [22]Jian Yupei, Huang Deqing*, Chen Hebai.The saddle case of Rayleigh-Duffing oscillators[J].Nonlinear Dynamics, 2018, 93: 2283-2300.
- [23]Chen Xingwu*, Chen Hebai.Global phase portraits of a degenerate Bogdanov-Takens system with symmetry: (II)[J].Discrete and Continuous Dynamical Systems-Series, 2018, 23: 4141-4170.
- [24]Tang Yilei, Llibre Jamue*, Chen Hebai.Global study of SD oscillator[J].Nonlinear Dynamics, 2018, 91: 1755-1777.
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