@book{38596,
	author = {Common, Michael S. and Stagl, Sigrid,},
	title = {Ecological economics :},
	publisher = {Cambridge University Press,},
	year = {2005.},
	address = {Cambridge, UK ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0642/2005045762-d.html}
}