'This present book is the definitive treatment of the new B dialect, written by its creator. Unlike its classical B predecessor which is intended as a reference for the classical B methodology, the present volume is squarely aimed at teaching, though the considerably lighter theory of Event-B permits some of the chapters to act as a reference too.' logcom.oxfordjournals.org '... a rich and accessible book, demonstrating both the strengths and weaknesses of the use of Event-B, and containing varied and valuable case studies as its core. It is written in a pleasant colloquial style, with changes in the vocal tempo and tone leaping off the pages. ... should be seriously considered for introductory courses on formal modelling with associated proof.' Journal of Functional Programming