5Banerjee A V. A Simple Model of Herd Behavior[J]. The Quarterly Journal of Economics, 1992, (107) :797 -817.
6Berndt E R, Pindyck R S, Azoulay P. Consumption Externalities and Diffusion in Pharmaceutical Markets: Antiulcer Drugs [ J ]. The Journal of Industrial Economics ,2003, (51) :243 -270.
7Brynjolfsson E, Kemerer C F. Network Externalities in Microcomputer Software:An Econometric Analysis of the Spreadsheet Market [ J ]. Management Science, 1996, (42) : 1627 - 1647.
8Davis F D. Perceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology [ J ]. Management In- formation Systems Quarterly, 1989, ( 13 ) :319 - 340.
9Duan W, Gu B, Whinston A B. Informational Cascades and Software Adoption on the Internet :An Empirical Investigation [ J ] Management Information Systems Quarterly,2009, (33) :23 -48.
10Finneran C M,Zhang P. Flow in Computer-mediated Environments:Promises and Challenges [ J ]. Communications of the As- sociation for Information Systems,2005, ( 15 ) :82 - 101.
