This paper introduces a new two-country, four-region model in order to study the possible trade-offs arising between national efficiency and interregional equity, differentiating for different strengths of agglomeration economies and different regional productivities.
Geography
Link
http://econpapers.repec.org/scripts/redir.pl?u=http%3A%2F%2Fdea.univpm.it%2Fquaderni%2Fpdf%2F245.pdf;h=repec:anc:wpaper:245