Submitted on: 12 May 2004.
Revised on: 03 July 2004.
Accepted on: 20 July 2004.
___________________JOURNAL OF ENGINEERING AND TECHNOLOGY MANAGEMENT
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Submitted on: 10 July 2006.
Revised on: 17 October 2006.
Accepted on: 14 November 2006.
___________________JOURNAL OF ENGINEERING AND TECHNOLOGY MANAGEMENT
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Submitted on: 02 August 2005.
Revised on: 17 September 2005.
Accepted on: 03 October 2005.
___________________JOURNAL OF ENGINEERING AND TECHNOLOGY MANAGEMENT
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