7 IZA Discussion Papers
IZA Discussion Paper No. 14349
IZA Discussion Paper No. 14033
IZA Discussion Paper No. 8758
published in: Econometrica; 2017, 85 (2), 645 - 660
IZA Discussion Paper No. 2347
shorter version published as "Dealing with Limited Overlap in Estimation of Average Treatment Effects" in: Biometrika, 2009, 96 (1), 187-199
IZA Discussion Paper No. 2091
published in: Review of Economics and Statistics, 2008, 90 (3), 389-405
IZA Discussion Paper No. 1728
published in: American Economic Review, 2006, 96 (4), 988–1012.