@book{1274,
	author = {Mitra, Sanjit Kumar.},
	title = { Digital Signal Processing :},
	publisher = {McGraw-Hill,},
	year = {2013.},
	address = {Chennai :},
	edition = {4th ed.},
	url = {https://books.google.com.pk/books?id=CTw6GoBh-vkC&source=gbs_similarbooks}
}