Temporary and permanent migration with and without an immobile factor.
"This paper develops two two-country overlapping-generations models--one with and one without an immobile factor--to study temporary and permanent migration. Temporary migration is shown to be equivalent to international lending and borrowing. One strong result found in the literature that if natives of each country are homogenous permanent migration leads to the migration of the entire population of the [sending] country in the long run is overturned. Welfare effects of migration are analyzed."
Demography↗