1. Most of the references are given in the notes to the previous talk, some new ones related to grazing are the following
2. Budd, C. and Dux, F. b Intermittency in impact oscillators close to resonance Bristol University Report AM-93–14, 1993.
3. Nusse, H, Ott, E. and Yorke, J. Border-collision bifurcations: a possible explanation for observed bifurcation phenomena, University of Maryland report, 1993.
4. Pomeau, Y. and Manneville, P. Intermittent transition to turbulence in dissipative dynamical systems Comm. Math. Phys., 84, 1980, 189.