Notes
- R. Wright , “Voice of America,” The New Republic ( September 13 , 1993 ), pp. 20 – 27 .
- S. Neumann , Strategic Information Systems, Competition Through Information Technologies ( New York Macmillan College Publishing , 1994 ).
- M.J. Porter , “How Competitive forces Shape Strategy,” Harvard Business Review ( March-April 1979 ).
- S. Neumann .