2Fritsch M,M Meschede.Product Innovation,Process Innovation,and Size[J].Review of Industrial Organization,2001,(19):335-350.
3Fudenberg D,J Tirole.Preemption and Rent Equalization in the Adoption of New Technology[J].Review of Economic Studies,1985,(52):383-401.
4Fung M K.Technological Opportunity and Economies of Scale in Research Productivity:A Study on Three Global Industries[J].Review of Industrial Organization,2002,(21):419-436.
5Gilbert R J,David M G Newbery.Preemptive Patenting and the Persistence of Monopoly[J].American Economic Review,1982,(72):514-526.
6Greenstein S,G Ramey.Market Structure,Innovation and Vertical Product Differentiation[J].International Journal of Industrial Organization,1998,(16):285-311.
7Love J H,S Roper.The Determinants of Innovation:R & D,Technology Transfer and Networking Effects[J].Review of Industrial Organization,1999,(15):43-64.
