1Alonso, W., 1964, Location andLand Use, Harvard University Press.
2Baldwin, R., Forslid, R., Martin, P., Ottaviano, G., Robert-Nicoud, F., 2003, Economic Geography and Public Policy, Princeton University Press.
3Baldwin, R., Krugman, P., 2004, Agglomeration, integration and tax harmonization,European Economic Review 48, 1-23.
4Behrens, K., Robert-Nicoud, F.,2009, Krugman's papers in regional science: The 100 dollar bill on the sidewalk is gone and the 2008 Nobel Prize well-deserved, Papers in Regional Science 88, 467-490.
5Borck, R., Pflfiger, M., 2006, Agglomeration and tax competition, European Economic Review 50, 647-668.
6Briilhart, M., Trionfetti, F., 2001, Industrial structure and public procurement: Theory and empirical evidence, Journal of Economic Integration 16, 106-127.
7Christaller, W., 1933, Central Places in Southern Germany, Fischer.
