@book{43031,
	author = {Roberts, Michael J.,},
	title = {Fundamentals of signals and systems /},
	publisher = {McGraw-Hill Higher Education,},
	year = {c2008.},
	address = {Boston :},
	edition = {1st ed.},
	url = {http://www.loc.gov/catdir/toc/ecip073/2006035903.html}
}