@book{184550,
	author = {United Nations Human Settlements Programme.},
	title = {The challenge of slums},
	publisher = {Earthscan Publications,},
	year = {2003.},
	address = {London ;},
	note = {"UN-HABITAT."},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10128930}
}