2John D. Evans, "Infrastructure for Sharing Geographic Information Among Environment Agencies", http://web. mit. edu/jdevans/thesis.html.
3L, Bottazzi, "Globalization and Local Proximity in Innovation: A Dynamic Process",European Economic Review, 2001 (45).
4J. Joeobs, The Economy of Cities,New York : Vintage Books,1969.
5Weisbrod, B.A. The Voluntary Nonprofit Sector[M]. Cambridge Mass: Harvard University Press, 1977.
6Weingast, B. Constitutions as Governance Structures: the Political Foundations of Secure Markets[J]. Journal of Institutional and Theoretical Economics, 1993(149) :286 - 311.
