@book{1815,
	author = {Caldwell, John C. and Caldwell, Bruce,},
	title = {Demographic transition theory /},
	publisher = {Springer,},
	year = {c2006.},
	address = {Dordrecht :},
	note = {Collection of texts partly published previously.},
	url = {http://www.loc.gov/catdir/enhancements/fy0824/2007451262-d.html}
}