@book{122983,
	author = {Rosser, M. J., and ebrary, Inc.},
	title = {Basic mathematics for economists},
	publisher = {Routledge,},
	year = {1993.},
	address = {London ;},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=2003304}
}