1. Vibration theory;Andronov,1959
2. Nonlinear phenomena in power electronics: attractors, bifurcations, chaos and nonlinear control;Banerjee,2001
3. Dynamics and bifurcations of non-smooth mechanical systems;Leine,2004
4. Differential equation with discontinuous right-hand sides;Filippov,1988
5. The problem of the center for differential equations with discontinuous right sides;Lunkevich;J Differ Equ,1968