On large market asymptotics for spatial price competition models
研究发现空间价格竞争模型中，随着产品数量增加，需求因素通过加成率与价格的相关性减弱，导致工具变量识别力下降，估计量不一致。
In spatial price competition models, demand factors have correlation with prices through the markup so that their identification power decreases as the number of product grows. Asymptotic results indicate lack of consistency of the estimator due to weak instruments.