@book{209464,
	author = {Portes, Alejandro, and Smith, Lori D., and ebrary, Inc.},
	title = {Institutions count},
	publisher = {University of California Press,},
	year = {c2012.},
	address = {Berkeley :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10590400}
}