1题名：The Effects of Urban Concentration on Economic Growth

作者：J. Vernon Henderson

期刊全称或缩写：NBER Working Paper

年份，卷（期），起止页码：No. 7503^*,Issued in January 2000

电子链接：http://www.nber.org/papers/w7503

2题名：The Effects of Urban Concentration on Economic Growth

作者：Richard P. Appelbaum, Jennifer Bigelow, Henry P. Kramer, Harvey L. Molotch, Paul M. Relis

期刊全称或缩写：Contemporary Sociology,

年份，卷（期），起止页码：Vol. 7, No. 2 (Mar., 1978), pp. 225-226

电子链接：http://links.jstor.org/sici?sici=0094-3061(197803)7%3A2%3C225%3ATEOUGA%3E2.0.CO%3B2-O

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