Ravallion, Martin; Datt, Gaurav; van de Walle, Dominique - In: Review of Income and Wealth 37 (1991) 4, pp. 345-61
The authors estimate that in 1985 about one in five persons in the developing world lived in poverty, judged by the standards of the poorest countries. This rises to one in three at a common, more generous, poverty line. The aggregate consumption short-fall of the poorest fifth is about one half...