@book{73788,
	author = {Ennals, J. R. and ebrary, Inc.},
	title = {Older workers in a sustainable society},
	publisher = {Peter Lang,},
	year = {c2011.},
	address = {Frankfurt am Main ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10620410}
}