@book{180280,
	author = {Christensen, Karl Bang. and ebrary, Inc.},
	title = {Rasch models in health},
	publisher = {ISTE Ltd/John Wiley and Sons Inc,},
	year = {2013.},
	series = {Applied mathematics series},
	address = {Hoboken, N.J. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10653862}
}