1. Noam E, Too weak to compete. Financial Times (19 July) 2002.
2. Scouria J, A brief overview of GSM. ccng.ca/~jscouria/GSM/gsmrepot.html.
3. Moore G. Cramming more components into integrated circuits. Electronics (April 19) 1965.
4. The age of spiritual machines;Kurzweil,2000
5. 2001: A space odyssey;Clarke,2000