This paper develops an overlapping generations model that involves the endogenous determination of fertility and an explicit city structure in order to analyze fully the social and natural changes in city populations. We provide conditions under which the model exhibits the spatial features of...

We investigate the interaction of regional population and employment in a simu1taneous model, allowing for interregional commuting. The proposed dynamic specification distinguishes between short-run and equilibrium adjustment effects and it encompasses the lagged-adjustment specification that is...

Concentration of immigrants and its associated externalities have become an important topic in contemporary international migration research, both from a methodological as well as an empirical perspective. The purpose of this paper is twofold. First, it aims to provide an overview of that part...