This paper shows that governments have no incentive to introduce nontariff barriers when they are free to set tariffs but they do when tariffs are determined cooperatively. We then show three results. First, with trade liberalization, there is a progression from using tariffs only to quotas, and...

This paper shows that governments have no incentive to introduce non-tariff barriers when they are free to set tariffs but they do when tariffs are determined cooperatively. We then show three results. First, with trade liberalization, there is a progression from u sing tariffs only to quotas,...

This paper has two objectives. First, we present the logit model of discrete consumer choice and apply it to an oligopoly model of product differentiation. Second, we reconsider the question of monopolistic competition and optimal product diversity. The model suggests that when the market...