World Development
World Development > 1998 > 26 > 8 > 1513-1528
World Development > 2005 > 33 > 3 > 455-480
World Development > 2012 > 40 > 8 > 1663-1674
World Development > 2016 > 78 > C > 136-147
World Development > 2016 > 80 > C > 33-47
World Development > 2018 > 109 > C > 206-221