@book{181014,
	author = {Couch, Leon W.},
	title = {Digital and analog communication systems /},
	publisher = {Pearson/Prentice Hall,},
	year = {c2007.},
	address = {Upper Saddle River, N.J. :},
	edition = {7th ed.},
	note = {Introduction (Page-29) Signal and Spectra (Page-61) Baseband Pulse and Digital Signaling (Page-156)Band Pass Signaling Principles and Circuits (Page-258)AM,FM and Digital Modulated Systems (Page-330)}
}