@book{55347,
	author = {Weitzman, Martin L., and ebrary, Inc.},
	title = {Income, wealth, and the maximum principle},
	publisher = {Harvard University Press,},
	year = {2003.},
	address = {Cambridge, Mass. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10328842}
}