6Charleis Jones, Jonhc Williams. Measuring the Social Return to R&D[J]. The Quarterly Journal of Economics, 1998, 113(4): 1119-1135.
7Fraunhofer Institute for Systems and Innovation Research. Innovation and Public Proeurement: Review of Issues at Stake [R]. The European Commission, 2006: 4.
8Jackob Edler, Luke Georghiou. Public Procurement and Innovation□Resurrecting the Demand Side[J]. Research Policy, 2007, 36: 949-963.
9Brooks Michael A., Ben J.. Heijdra. In Search of Rent-Seeking, In Rowley, Charles K. and Robert D. Tollison, and Cordon Tullock ed. The Political Economy of Rent-Seeking[M]. Boston/Dordrecht/New York: Kluwer Aeademic Publishers, 1988: 27-50.