1. Augereau, A., 1999. The battle for 56K: did network effects matter? Working paper, http://www.kellogg.nwu.edu/faculty/greenstein/images/research.html.
2. Bailey, J.P., 2000. High speed internet access diffusion: an analysis of Internet Service Providers. Firm strategy, Mimeo, University of Maryland, College Park.
3. The State of the Net: The New Frontier;Clemente,1998
4. The theory of the firm revisited;Demsetz;Journal of Law, Economics and Organization,1988
5. Do commercial ISPs provide universal access?;Downes,1998