@book{103501,
	author = {Dasgupta, Partha. and ebrary, Inc.},
	title = {The economics of non-convex ecosystems},
	publisher = {Kluwer Academic Publishers,},
	year = {2004.},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10101567}
}