European regional populations: current trends, future pathways and policy optionsDemographic and migratory flows affecting European regions and cities: final report DEMIFEREvaluation of the Netherlands Interdisciplinary Demographic Institute (NIDI)In search for a general model of interregional migrationStudy of past and future interregional migration trends and patterns within European Union countries: in search of a generally applicable explanatory model: final reportIn search of a modelling strategy for projecting internal migration in European countries