4Malone. T.W, Yates. J &Benjamin. R.I, Electronic markets and electronic hierarchies Communications of the ACM, 1987.
5Goldsby, Thomas J. and James A. Eckert, Blectronic Transportation Marketplaces:A Transaction Cost Perspectives. Industrial Marketing management, 2003,(32):187-198.
6A. Barua, C.H. Kriebel and T. Mukhopadhyay, Information technologies and business value: An analytic and empirical investigation. Information Systems Research, 1995,6(1): 3-23.