@book{8293,
	author = {Ziemer, Rodger E. and Tranter, William H.},
	title = {Principles of communication: systems, modulation, and noise },
	publisher = {Wiley,},
	year = {c2002.},
	address = {New York :},
	edition = {5th ed.},
	url = {http://www.loc.gov/catdir/description/wiley036/2001045389.html}
}