@book{548257,
	author = {Newnan, Donald G. and Eschenbach, Ted.},
	title = {Essentials of engineering economic analysis /},
	publisher = {Oxford University Press,},
	year = {2002.},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0611/2001278248-t.html}
}