<br /><br />1 <p></p>文献名：R&amp;D Spillovers and the Geography of Innovation and Production <p></p><p>作者：Audretsch, David, and Maryann Feldman</p><p>期刊：American Economic Review 86 (1996), 630-640.</p><p>电子链接：http://www.jstor.org/pss/2118216</p><p></p>2 <p></p>文献名： Geographic Concentration in U.S. Manufacturing Industries: A Dartboard Approach <p></p><p>作者：Ellison, Glenn, and Edward Glaeser,</p><p>期刊：Journal of Political Economy 105 (1997), 889-927.</p><p>电子链接：http://www.jstor.org/pss/2138901</p><p></p>3 <p></p>文献名：An Estimated Model of Entrepreneurial Choice under Liquidity Constraints <p></p><p>作者：Evans, David, and Boyan Jovanovic</p><p>期刊：Journal of Political Economy 97:4 (1989), 808-827.</p><p>电子链接：http://www.jstor.org/pss/1832192</p><p></p>4 <p></p>文献名：Does Employment Protection Reduce Productivity? Evidence from U.S. States <p></p><p>作者：Autor, David, William Kerr, and Adriana Kugler</p><p>期刊：Economic Journal 117:521 (2007), 189-217.</p><p>电子链接：http://www3.interscience.wiley.com/journal/117984666/abstract</p><p></p>5 <p></p>文献名： Contrasts in Agglomeration: New York and Pittsburgh <p></p><p>作者：Chinitz, Benjamin</p><p>期刊： American Economic Review 51:2 (1961), 279-289.</p><p>电子链接：</p>6 <p></p>文献名：Urban Density and the Rate of Invention <p></p><p>作者：Carlino, Gerald, Satyajit Chatterjee, and Robert Hunt</p><p>期刊：Journal of Urban Economics 61 (2007), 389-419.</p><p>电子链接：http://www.sciencedirect.com/science/article/B6WMG-4KXDWBC-1/2/9fab938483d175f4756b2aaef50a80d0</p><p></p>
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