World Development
World Development > 1997 > 25 > 3 > 425-436
World Development > 1997 > 25 > 5 > 681-694
World Development > 1997 > 25 > 9 > 1541-1550
World Development > 1997 > 25 > 10 > 1683-1700
World Development > 1997 > 25 > 10 > 1569-1587
World Development > 1997 > 25 > 11 > 1821-1837
World Development > 1997 > 25 > 11 > 1857-1861