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Submitted on: 05 June 2008.
Revised on: 03 July 2008.
Accepted on: 29 August 2008.
___________________JOURNAL OF INFORMATION TECHNOLOGY
Submitted on: 07 August 2002.
Revised on: 15 October 2002.
Accepted on: 24 November 2002.
___________________JOURNAL OF INFORMATION TECHNOLOGY
Submitted on: 01 October 1998.
Revised on: 17 December 1998.
Accepted on: 01 February 1999.
___________________JOURNAL OF INFORMATION TECHNOLOGY