The Geography of Knowledge and R&D-led Growth
研究了创新活动的空间差异和迁移成本如何影响经济地理、市场结构、增长和区域不平等，发现缩小区域间知识溢出差距能促进增长并减少不平等。
Abstract We analyse how spatial disparities in innovation activities, coupled with migration costs, affect economic geography, market structure, growth and regional inequality. We provide conditions for existence and uniqueness of a spatial equilibrium, and for the endogenous emergence of industry clusters. Spatial variations in knowledge spillovers lead to spatial concentration of more innovative firms. Migration costs, however, limit the concentration of economic activities in the most productive region. Narrowing the gap in knowledge spillovers across regions raises growth, and reduces regional inequality by making firms more sensitive to wage differentials. The associated change in the industry concentration has positive welfare effects.