Submitted on: 10 June 2013.
Revised on: 01 July 2013.
Accepted on: 16 July 2013.
Transportation Letters-The International Journal of Transportation Research
Submitted on: 30 October 2002.
Revised on: 09 November 2002.
Accepted on: 04 December 2002.
Transportation Letters-The International Journal of Transportation Research
Submitted on: 19 August 2005.
Revised on: 01 September 2005.
Accepted on: 06 September 2005.
Transportation Letters-The International Journal of Transportation Research
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Submitted on: 26 October 2005.
Revised on: 07 November 2005.
Accepted on: 14 November 2005.
Transportation Letters-The International Journal of Transportation Research
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