@book{27425,
	author = {Pfeifer, Rolf, and Scheier, Christian. and ebrary, Inc.},
	title = {Understanding intelligence},
	publisher = {MIT Press,},
	year = {c1999.},
	address = {Cambridge, MA :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10225295}
}