4 IZA Discussion Papers
IZA Discussion Paper No. 15507
IZA Discussion Paper No. 6152
published in: Cambridge Journal of Economics, 2014, 38 (5), 1221-1246
IZA Discussion Paper No. 6028
published in: Tijdschrift voor economische en sociale geografie, 2013, 104 (3), 278-291
IZA Discussion Paper No. 2099
published in: Annals of Regional Science, 2008, 42, 967-986