A.  Balluchi, Bicchi, A., Mazzi, E., Vincentelli, S. A., and Serra, G., ?Hybrid Modelling and Control of the Common Rail Injection System?, in Hybrid Systems: Computation and Control, 2006, vol. 3927 / 2006, pp. 79-92. 

A.  Bicchi, Marigo, A., and Piccoli, B., ?Improving efficiency of finite plans by optimal choice of input sets?, in Hybrid Systems: Computation and Control, 2006, vol. 3927 / 2006, pp. 108-122.