@book{66489,
	author = {Proakis John G},
	title = {Communication systems engineering},
	publisher = {Pearson Education},
	year = {c.2002},
	address = {New Delhi},
	edition = {2nd ed.},
	url = {http://www.amazon.com/Communication-Systems-Engineering-Proakis-Masoud/dp/8120327500/ref=sr_1_1?ie=UTF8&qid=1455002946&sr=8-1&keywords=9788120327504}
}