World Development
World Development > 2000 > 28 > 1 > 1-20
World Development > 2000 > 28 > 9 > 1627-1642
World Development > 2000 > 28 > 9 > 1689-1702
World Development > 2000 > 28 > 12 > 2067-2082
World Development > 2000 > 28 > 12 > 2083-2103