一、 【作者(必填)】Robert W. Helsley and William C. Strange【文题(必填)】Coagglomeration, Clusters, and the Scale and Composition of Cities
【年份(必填)】Journal of Political Economy, Vol. 122, No. 5 (October 2014), pp. 1064-1093
二、 【作者(必填)】[size=1.2em]Edward L. Glaeser【文题(必填)】A WORLD OF CITIES: THE CAUSES AND CONSEQUENCES OF URBANIZATION IN POORER COUNTRIES
【年份(必填)】Journal of the European Economic Association > Vol 12 Issue 5 > Abstract
【全文链接或数据库名称(选填)】http://onlinelibrary.wiley.com/doi/10.1111/jeea.12100/abstract