@book{231890,
	author = {Clement, John, and ebrary, Inc.},
	title = {Model based learning and instruction in science},
	publisher = {Springer,},
	year = {c2008.},
	series = {Models and modeling in science education ;},
	address = {[New York] :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10217615}
}