Pfaffermayr, Michael; Egger, Peter H. - 2002
between the core and the periphery countries. We find that in all phases of integration core-periphery and intra-periphery … suggests that intra-periphery trade and intracore trade will intensify in course of 'typical' additional enlargements at the … expense of core-periphery trade. This suggests that either the old core will change or a second, new one may form …