@book{53420,
	author = {Oppenheim Alan V. and  Nawab S. Hamid Willsky Alan S. },
	title = {Signals and Systems},
	publisher = {Prentice Hall India Pvt. Ltd.},
	year = {2000},
	address = {New Delhi},
	edition = {2},
	note = {"Doneted by Mithilesh Tiwari, Nagpur"}
}