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Submitted on: 10 October 2002.
Revised on: 18 October 2002.
Accepted on: 13 November 2002.
Research in Transportation Economics
Submitted on: 05 August 2016.
Revised on: 31 August 2016.
Accepted on: 08 September 2016.
Research in Transportation Economics
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Submitted on: 07 February 2004.
Revised on: 02 March 2004.
Accepted on: 16 March 2004.
Research in Transportation Economics
Submitted on: 01 November 2020.
Revised on: 10 November 2020.
Accepted on: 04 December 2020.
Research in Transportation Economics
Submitted on: 02 November 2020.
Revised on: 03 December 2020.
Accepted on: 21 December 2020.
Research in Transportation Economics
Submitted on: 14 August 1998.
Revised on: 22 August 1998.
Accepted on: 12 September 1998.
Research in Transportation Economics
Submitted on: 03 December 2008.
Revised on: 13 January 2009.
Accepted on: 18 January 2009.
Research in Transportation Economics
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