@book{12398,
	author = {Haykin, Simon},
	title = {Signals and systems},
	publisher = {John Wiley & Sons Publisher},
	year = {2004},
	address = {U.P. India},
	edition = {2nd},
	url = {https://libgen.is/book/index.php?md5=531ADFE289F14BF36C3BC1BCE6507019}
}