Submitted on: 23 January 2015.
Revised on: 23 February 2015.
Accepted on: 05 April 2015.
___________________Engineering Management Journal
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Submitted on: 21 February 2022.
Revised on: 14 May 2022.
Accepted on: 16 June 2022.
___________________Engineering Management Journal
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Submitted on: 04 May 2012.
Revised on: 04 June 2012.
Accepted on: 21 July 2012.
___________________Engineering Management Journal
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Submitted on: 03 October 2003.
Revised on: 25 December 2003.
Accepted on: 12 February 2004.
___________________Engineering Management Journal