@book{37836,
	author = {Welfens, Paul J. J. and ebrary, Inc.},
	title = {Innovations in macroeconomics},
	publisher = {Springer,},
	year = {2008.},
	address = {Berlin :},
	edition = {[2nd ed.].},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10239429}
}