Imperfectly Competitive Equilibria in International Commodity Markets
提出一种计算寡头或寡头垄断市场空间均衡的新方法，并应用于国际小麦市场，检验几种市场行为假说，发现古诺-纳什双寡头模型不能很好解释贸易。
Abstract The simple model of perfect competition in spatial markets has been widely applied in analyzing international agricultural trade. Yet, many markets do not appear to be perfectly competitive. In this paper we offer a new and efficient method for computing spatial equilibrium in oligopolistic or oligopsonistic markets. We apply the technique to an analysis of several hypotheses of market conduct in the international wheat market that have been put forward by other authors. We conclude that a Cournot‐Nash duopsony model does not perform well in explaining trade.