@book{21022,
	author = {Oppenheim, Alan V},
	title = {Discrete time signal processing},
	publisher = {Pearson Education Publisher},
	year = {2014},
	address = {New Delhi},
	edition = {3rd},
	url = {https://www.libgen.is/book/index.php?md5=CEB8F6E1E7E8077697105530229AE1A7}
}