@book{61694,
	author = {Keen, Peter G. W. and Sol, H. G. and ebrary, Inc.},
	title = {Decision enhancement services},
	publisher = {IOS Press,},
	year = {c2008.},
	address = {Amsterdam :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10309229}
}