3 IZA Discussion Papers
IZA Discussion Paper No. 3716
published in revised form as 'The size of regions with land use for production ' in: Regional Science and Urban Economics, 2010, 40 (6), 481 - 489
IZA Discussion Paper No. 2829
IZA Discussion Paper No. 1462
published in: Journal of Economics, 2007, 92 (3), 208-229