@book{50118,
	author = {Jordan, D. W. and Smith, Peter.},
	title = {Mathematical techniques :},
	publisher = {Oxford University Press ,},
	year = {2008},
	address = {Oxford:},
	edition = {4th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0907/2008004046-b.html}
}