@book{994,
	author = {"Haykin,Simon"},
	title = {Communication systems},
	publisher = {John Wiley & Sons Publisher},
	address = {New york},
	edition = {3rd},
	url = {https://libgen.is/book/index.php?md5=0D7B2D4C12E3B9C37D94EDCFF4698458}
}