@book{809,
	author = {Hsu, Hwei P.},
	title = {Schaum's outlines signals and systems /},
	publisher = {McGraw-Hill Education,},
	year = {c2020.},
	series = {Schaum's outline series},
	address = {New York, NY :},
	edition = {4th ed.},
	note = {Includes index.}
}