@book{21973,
	author = {Shannon, Claude E. and Weaver, Warren},
	title = {The mathematical theory of communication.},
	publisher = {University of Illinois Press},
	year = {1949.},
	address = {Urbana},
	note = {"The first paper is reprinted from the Bell System technical journal, July and October, 1948 ... The second ... appeared [in condensed form] in Scientific American July, 1949."}
}