5Hill Kevin A, Hughes John E. Cyberpolitics: Citizen Activism in the Age of the Internet(People, Passions, and Power) [ M ]. Lanham : Rowman & Littlefield, 1998:207.
7Dahlberg L. The Internet and Democratic Discourse: Exploring the Prospects of Online Deliberative Forums Extending the Public Sphere [ J ]. Information Communication and Society , 2001,4 ( 4 ) : 615 - 633.