Limit Cycles in Discontinuous Piecewise Linear Planar Hamiltonian Systems Without Equilibrium Points. - Zhengkang Li; Xingbo Liu (Int. J. Bifurc. Chaos, 2022)

Impact limit cycles in the planar piecewise linear hybrid systems. - Zhengkang Li; Xingbo Liu (Commun. Nonlinear Sci. Numer. Simul., 2023)