@book{4550,
	author = {Fletcher, R.},
	title = {Practical methods of optimization /},
	publisher = {Wiley,},
	year = {2000.},
	address = {[S.l.] :},
	edition = {2nd ed.},
	url = {http://www.amazon.com/exec/obidos/ASIN/0471494631/chopaconline-20}
}