6 IZA Discussion Papers
IZA Discussion Paper No. 10473
published in: Journal of Applied Econometrics, 2019, 34, 385-402
IZA Discussion Paper No. 10057
published in: Economics Letters, 2017, 150, 152–154
IZA Discussion Paper No. 8049
IZA Discussion Paper No. 8048
IZA Discussion Paper No. 6692
published as 'Testing for the Unconfoundedness Assumption Using an Instrumental Assumption' in: Journal of Causal Inference, 2014, 2, 187-199
IZA Discussion Paper No. 3640
published in: Journal of Economic Literature, 2009, 47(1), 1-81