5Gans, J., D. Hsu, and S. Stern, When does Start up Innovation Spur the Gale of Creative Destruction? [J]. RAND Journal of Economics, 2002, 33(4):571-586.
6Jin, G. Z. and A. Kato, Dividing Online and Offline: A Case Study[J]. Review of Economic Studies, 2007, 74(4): 981- 1004.
7Lai, E. , R. Riezman, and P. Wang, Outsourcing of Innovation [J]. Economic Theory, 2009(3) :485-515.
8Pinker, E.J. , A. Seidmann, and Y. Vakrat, Managing Online Auctions: Current Business and Research Issues [J]. Management Science, 2003, 49 ( 11 ) : 1457 1484.
9Williamson, O. E. Markets and Hierarchies: Analysis and Antitrust Implications [M]. New York, NY: Free Press. 1975.
10Arrow, K. Economic Welfare and the Allocation of Resources for Invention [M], in The Rate and Direction of Inventive Activity (R. Nelson ed. ), Princeton University Press. 1962.