books.google.com - Infinite dimensional systems is now an established area of research. Given the recent trend in systems theory and in applications towards a synthesis of time- and frequency-domain methods, there is a need for an introductory text which treats both state-space and frequency-domain aspects in an integrated...http://books.google.com/books/about/An_Introduction_to_Infinite_Dimensional.html?id=G_x-F-l2V2UC&q=finite&utm_source=gb-gplus-shareAn Introduction to Infinite-Dimensional Linear Systems Theory