The purpose of this paper is to analyze the impact of economic integration when countries differ in their social security systems, more specifically in the degree of funding of their pensions, and in the flexibility in the retirement age. It then turns to the impact of ageing, namely the decline...

We analyze the geographic concentration of economic activities within the framework of a two country-four region model. Trade between both regions and countries entails transaction costs which are differentiated according to the interregional or international nature of the flows. Allowing for...