4 IZA Discussion Papers
IZA Discussion Paper No. 9897
published as 'How Do Travel Costs Shape Collaboration?' in: Management Science, 2020, 66 (2), 3340-3360
IZA Discussion Paper No. 5794
published in: Applied Economics, 2013, 45 (13), 1719-1729
IZA Discussion Paper No. 2384
published in: D. Lee (ed.), Advances in Airline Economics, Vol. 2: The Economics of Airline Institutions, Operations and Marketing, Elsevier 2007
IZA Discussion Paper No. 1096
published in: Economic Journal, 2005, 115 (500), 224-246