5 IZA Discussion Papers
IZA Discussion Paper No. 15744
IZA Discussion Paper No. 8080
IZA Discussion Paper No. 5881
published as 'On input market frictions and estimation of factors' demand' in: Southern Economic Journal, 2014, 80 (3), 772-782.
IZA Discussion Paper No. 5359
revised version published in: Review of Economics and Statistics, 2014, 96 (5), 986-998
IZA Discussion Paper No. 1084
published in: Applied Economics Letters, 2008, 15 (4), 277-286