@book{49138,
	author = {Clayton, Philip,},
	title = {The re-emergence of emergence :},
	publisher = {Oxford University Press,},
	year = {2006.},
	address = {Oxford :},
	url = {http://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=201162}
}