@book{60126,
	author = {Riskihn E ,. and Parr J ,},
	title = {Signals Systems and Transforms 4 th ed /},
	publisher = {Dorling Kindersley (India) Pvt.Ltd. Licensees of Pearson Education},
	year = {2014},
	address = {New Delhi},
	edition = {4 th ed .}
}