IZA Publications
IZA Discussion Paper No. 11584
IZA Discussion Paper No. 9210
IZA Discussion Paper No. 6341
revised version published in: World Development, 2013, 41, 265–285
5273号现正讨论文件
Published in: International Journal of Social Economics, 2016 vol 4 issue 1
IZA Discussion Paper No. 3796
published in: Well-Being and Social Policy, 2009, 5 (1), 1-18
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