@book{59024,
	author = {Ravallion, Martin.},
	title = {Poverty comparisons /},
	publisher = {Harwood Academic Publishers,},
	year = {c1994.},
	series = {Fundamentals of pure and applied economics,},
	address = {Chur, Switzerland ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0653/93014943-d.html}
}