3Wieser M. Virtual high tech clusters : The modern Sil- icon valley [ C ]//Shen W, de Souza J M, Barthis J P, Lin Z. The 7 th International Conference on Com- puter Supported Cooperative Work in Design. Rio de Janeiro, 2002:397-403.
4Tripathi R, Gupta M P, Bhattacharya J. Interopera- bility adoption among government and corporate por- tals in India : A study [ J ]. Journal of Enterprise In- formation Management, 2012,25 (2) :98-122.
5Turk T, Trkman P. Bass model estimates for broad- band diffusion in European countries [ J ]. Technolog- ical Forecasting and Social Change, 2012,79 ( 1 ) :85 -96.
6Guseo R, Guidolin M. Cellular automata with network incubation in information technology diffusion [ J ]. Physica A: Statistical Mechanics and Its Applica- tions, 2010,389 (12) :2422-2433.
7Kuandykov L, Sokolov M. Impact of social neighbor- hood on diffusion of innovation S-curve [ J ]. Deci- sion Support Systems, 2010,48 (4) :531-535.
8Kiss I Z, Broom M, Craze P G, Rafols I. Can epi- demic models describe the diffusion of topics across disciplines ? [ J ] . Journal of Informetrics, 2010, 4( 1 ) :74-82.
9Dahl M S, Pedersen C R. Knowledge flows through informal contacts in industrial clusters:Myth or real- ity ? [ J ]. Research Policy, 2004,33 ( 10 ) : 1673 - 1686.
10Ostergaard C R. Knowledge flows through social net- works in a cluster:Comparing university and industry links [ J ]. Structural Change and Economic Dynam- ics, 2009,20(3) : 196-210.