The economics of domestic market integration
这篇综述梳理了通过测量内部边界效应来证明国内市场一体化或碎片化程度的文献，回顾了贸易流、资本流和价格三种主要方法，并强调新方法能更好区分行政障碍和地理障碍，发现国内市场比早期研究认为的更一体化。
Abstract This paper reviews the literature that evidences the extent of the integration and fragmentation of domestic markets from measuring internal border effects. The empirical evidence from three main approaches—trade flows‐related, capital flows‐related, and price‐related—are reviewed. They are evaluated with emphasis on the role of recent methodological developments that adequately deals with the spatial and data aggregation problems and use disaggregated (micro) data, refined distance measures, and fine‐grained geographical areas. In particular, it enables distinguishing trade costs due to informal administrative impediments (border effects) and geographical barriers (distance effect). These allow for better inferences about internal border effects and domestic market integration to be drawn. They reveal that traditional approaches, which fail to tackle these inadequacies, have over‐estimated the size of the internal border effects and in effect domestic markets are more integrated than earlier documented. This addresses the reported mixed evidence found in earlier studies.