'What is new, even for most experts in this field, is the detailed treatment of generalised well-posed systems, so-called 'system nodes' ... undoubtedly an impressive piece of work ... fully deserving of its encyclopaedic pretensions ... very well written, with tremendous care given to getting across both the basic ideas of the results and their most general versions ... cited literature is incredibly comprehensive, and even most experts in the field will find some hidden gems in the bibliography.' Bulletin of the London Mathematical Society Journal The book is well and carefully written. The material is self-contained and all the proofs are provided within the text. ...presents a ... complete treatment of well-posed linear control systems. Mathematical Reviews