Paris, Quirino; Drogué, Sophie; Anania, Giovanni - In: Economic Modelling 28 (2011) 6, pp. 2509-2516
Empirical spatial models of trade that are based on a mathematical programming specification often exhibit a large discrepancy between the equilibrium solution and the observed demand, supply and levels of trade flows among countries. This discrepancy may be due to several causes. Assuming,...