@book{41456,
	author = {Fletcher, R. and ebrary, Inc.},
	title = {Practical methods of optimization},
	publisher = {Wiley,},
	year = {2008, c1987.},
	address = {Chichester, West Sussex, U.K. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10719151}
}