2Jaffe A. Real effects of academic research [J]. American Economic Review, 79, 1989.
3Jaffe A, Trajtenberg M , Henderson R. Geographic localisation of knowledge spillovers as evidenced by patent citations [J]. Quarterly Journal of Economics,108, 1993.
4Kenney M . Biotechnology: The University-Industrial Complex [M]. Yale University Press, New Haven. 1986.
5Lundvall B A. National Systems of Innovation[M].London: Pinter. 1993.
6Markusen A. Sticky Places in Slippery Space: a Typology of Industrial Districts[J]. Economic Geography,72, 1996.
7Marshall A. Principles. of Economics (Sixth edition)[M]. McMillan and Co Ltd. London, 1910.
8Pavitt K. On the Nature of Technology [M]. Mimeo Univ of Sussex-Science Policy Research Unit,1987.
9Penrose E. The Theory of the Growth of the Firm[M]. Basil Blackwell. Oxford, 1959.
10Pisano G. The governance of innovat on: vertical integration and collaborative agreements in the biotechnology industry [J]. Research Policy, 20, 1991.