ENDOGENOUS MARKET STRUCTURES AND STRATEGIC TRADE POLICY*
研究了当市场结构由企业自由进入决定时，最优出口促进政策总是补贴出口，与古诺或伯川德竞争无关，并推导出最优补贴率为价格除以需求弹性。
I characterize the optimal export promoting policy for international markets whose structure is endogenous. Contrary to the ambiguous results of strategic trade policy for duopolies, it is always optimal to subsidize exports when entry is endogenous, under both quantity and price competition. With homogenous goods the optimal export subsidy is a fraction1/εof the price, whereεis the elasticity of demand (the exact opposite of the optimal export tax in the neoclassical trade theory). Analogously, I show the general optimality of R&D subsidies and of competitive devaluations to promote exports in foreign markets where entry is endogenous. © (2011) by the Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.