1. The coming cyberspace time and the end of polity;Nguyen,1996
2. Goodman S, et al. The global diffusion of the Internet: patterns and problems, 1997. Available from: som.csudh.edu/cis/lpress/sy.htm.
3. Naldi M. The Internet’s growth problems. Telecommunications online 1996;January. Available from: www.telecoms-mag.com/issues/199801/tci/naldi.html.
4. Transport, communications and spatial organization: future trends and conceptual frameworks;Capello,1993
5. Virtual culture—identity and communication in cybersociety,1998