@book{4740,
	author = {Wolfram, Stephen.},
	title = {The mathematica book /},
	publisher = {Wolfram Media ;},
	year = {c1999.},
	address = {Champaign, IL :},
	edition = {4th ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/cam023/98037600.html}
}