6 IZA Discussion Papers
IZA Discussion Paper No. 12190
forthcoming in: I. Ganguli, S. Kahn, M.MacGarvie (eds.), The Roles of Immigrants and Foreign Students in U.S. Science, Innovation, and Entrepreneurship,'NBER, 2019
IZA Discussion Paper No. 7382
revised version published as 'The Value of Hiring through Employee Referrals' in: Quarterly Journal of Economics, 2015, 130(2), 805-839
IZA Discussion Paper No. 6715
IZA Discussion Paper No. 5726
published in: Journal of Economics and Management Strategy, 2013, 22 (2), 365-389
IZA Discussion Paper No. 3945
published in: Contemporary Economic Policy, 2010, 28 (3), 353-365
IZA Discussion Paper No. 345
published in: Schätzl L./J.R. Diez (eds.), Technological Change and Regional Development in Europe, Heidelberg (2001), 90-111