@book{494,
	author = {Lathi, B. P.},
	title = {Linear Systems and Signals.},
	publisher = {Oxford University Press,},
	year = {2010.},
	address = {New York :},
	edition = {2nd ed.},
	url = {https://books.google.com.pk/books/about/Linear_Systems_and_Signals.html?id=2BVGAQAAIAAJ&source=kp_book_description&redir_esc=y}
}