Lazar, Mircea and Heemels, W.P.M.H. and Weiland, Siep and Bemporad, Alberto  On the stability of quadratic forms based model predictive control of constrained PWA systems.   In:  American Control Conference.   IEEE, 8th-10th June 2005, 575-580 .  ISBN 0-7803-9098-9       (2005)