@book{30981,
	author = {Hsu, Hwei P and Mitra, Debjani},
	title = {Analog and digital communications },
	publisher = {Tata McGraw Hill Education},
	year = {2010},
	series = {Schaum's outlines},
	address = {New Delhi},
	edition = {3rd ed.},
	note = {Includes index}
}