In a small open economy with heterogeneous firms, in which tariffs determine the mass of active firms, the gains from trade liberalization depend positively on the level of firm vertical heterogeneity and negatively on transportation costs. The benefits from temporary protection depend on the...

In a small open economy with heterogeneous firms, in which tariffs determine the mass of active firms, free trade optimality depends positively on the level of firm heterogeneity and negatively on transportation costs. The benefits from temporary protection depend on the level of backwardness:...