State Space and Input-Output Linear Systems

It is difficult for me to forget the mild sense of betrayal I felt some ten years ago when I discovered, with considerable dismay, that my two favorite books on linear system theory - Desoer''s Notes for a Second Course on Linear Systems and Brockett''s Finite Dimensional Linear Systems - were both out of print. Since that time, of course, linear system theory has undergone a transformation of the...