3. BOOK REVIEWS: A. BENSOUSSAN, G. DA PRATO, M. C. DELFOUR, S. K. MITTER, REPRESENTATION AND CONTROL OF INFINITE DIMENSIONAL SYSTEMS, BIRKHÄUSER, BOSTON, 2007, 2ND ED., XXVI + 575 P. 5 ILLUS., SERIES: SYSTEMS & CONTROL: FOUNDATIONS & APPLICATIONS, IS.