Submitted on: 27 December 2001.
Revised on: 21 February 2002.
Accepted on: 08 April 2002.
___________________JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT
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Submitted on: 20 November 2008.
Revised on: 17 December 2008.
Accepted on: 12 January 2009.
___________________JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT
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Submitted on: 13 June 2012.
Revised on: 04 August 2012.
Accepted on: 27 August 2012.
___________________JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT
Submitted on: 07 January 2011.
Revised on: 24 April 2011.
Accepted on: 23 May 2011.
___________________JOURNAL OF CONSTRUCTION ENGINEERING AND MANAGEMENT