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Faini's "Increasing returns, migrations and convergence": permanent vs. temporary migration
Gillen, William J., (2000)
Increasing returns, migrations and convergence
Faini, Riccardo, (1996)
Understanding geography and trade
Urban, Dieter M., (1999)
A common error in the geometry of macroeconomic models
Guccione, Antonio, (1988)
Search and Fetter's law of markets
Gillen, William J., (1993)