Submitted on: 21 October 2005.
Revised on: 24 November 2005.
Accepted on: 05 December 2005.
___________________Electronic Commerce Research and Applications
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Submitted on: 22 April 2006.
Revised on: 21 July 2006.
Accepted on: 25 August 2006.
___________________Electronic Commerce Research and Applications
Submitted on: 12 November 2001.
Revised on: 22 January 2002.
Accepted on: 02 February 2002.
___________________Electronic Commerce Research and Applications
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Submitted on: 09 May 2022.
Revised on: 16 July 2022.
Accepted on: 15 August 2022.
___________________Electronic Commerce Research and Applications
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Submitted on: 07 April 2013.
Revised on: 18 July 2013.
Accepted on: 11 August 2013.
___________________Electronic Commerce Research and Applications