7Hong W.. Decline of the center: the decentralizing processof knowledge transfer of Chinese universities from 1985 to 2004 [J]. Research Policy, 2008,37 (4):580-595.
8Pavitt K. Patent statistics as indicators of innovative activities: possibilities and problems [ J ]. Scientometrics, 1985, 7 (1/2):77 -99.
9Hagedoom J, Cloodt M. Measuring innovative performance: is there an advantage in using multiple indicators? [J]. Re- search Policy ,2003,32( 8 ) : 1365 - 1379.
