1. On continuous approximation of discontinuous systems;Awrejcewicz;Nonlinear Anal.,2005
2. Bifurcations of planar sliding homoclinics;Awrejcewicz;Math. Probl. Eng.,2006
3. Smooth and Non-smooth High Dimensional Chaos and the Melnikov-type Methods;Awrejcewicz,2007
4. Bifurcation and Chaos in Nonsmooth Mechanical Systems;Awrejcewicz,2003
5. F. Battelli, M. Fečkan, On the chaotic behaviour of discontinuous systems, submitted for publication