books.google.de - Computers can be described as a series of communication processes on many levels. When more than one computer is involved, even more layers of communication are necessary. Communication complexity is the mathematical theory of such communication processes. It is also often used as an abstract model of...http://books.google.de/books/about/Communication_Complexity.html?hl=de&id=dHH7rdhKwzsC&q=Exercise&utm_source=gb-gplus-shareCommunication Complexity