4Rosenberg N. Technological Change in the Machine Tool Industry: 1840-1910[J]. Jgurnal of Economic History, 1963, (23) :414 - 446.
5M. Mueller, Telecom Policy and Digital Convergence [ M ]. Hong Kong: City University of Hong Kong Press, 1997.
6LIND J. Ubiquitous Convergence: Market Redefinitions Generated by Technological Change and the Industry Life Cycle[ R]. New York: Paper for the Druid Academy Winter Conference, 2005.