1. Policy responses to population decline in the twenty-first century: pronatalism, migration policy, growing labour force participation or other alternatives?;Pandora;Demografia,1991
2. Immigration policy and immigrants' ages;Espenshade;Population and Development Review,1988
3. Immigration and the Work Force
4. Does Europe need immigrants? Population and work force projections;Coleman;International Migration Review,1992
5. International migration: demographic and socio-economic consequences in the United Kingdom and Europe;Coleman;International Migration Review,1995