1Bonanno,G.,B.Haworth.Intensity of Competition and the Choice Between Product and Process Innovation[J].International Journal of Industrial Organization,1998,16:495-510.
2Mussa,M.,Rosen,S.Monopoly and product quality[J].Journal of Economic Theory,1978,18:301-317.
7DELBONO F, DENICOLOV. R&D Investment in a Symmetric and Homogeneous Oligopoly[J]. International Journal of Industrial Organization, 1990, 8(2) : 297-313.
8BESTER H, PETRAKIS E. The Incentives for Cost Reduction in a Differentiated Industry [J]. International Journal of Industrial Organization, 1993, 11 (4), 519-534.
9BONANNO G, HAWORTH B. Intensity of Compe tition and the Choice between Product and Process In novation[J]. International Journal of Industrial Or ganization, 1998, 16(4): 495-510.
10WEISS P. Adoption of Product and Process Innova tion in Differentiated Markets: The Impact of Competition[J]. Review of Industrial Organization, 2003, 23(3/4) : 301-314.
