Existence of Closed Orbit in Piecewise Continuous Matsumoto-Chua System
  In this paper we study conditions for the existence of the close orbit in piecewise continuous Matsumoto-Chua System. Our interest are in a pseudo saddle-node bifurcation in the first return application. In this bifurcation the close orbit is releted to stable fixed point. 
Jeferson Cassiano
math.DS