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Submitted on: 02 September 1998.
Revised on: 07 December 1998.
Accepted on: 13 January 1999.
___________________International Journal of Heavy Vehicle Systems
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Submitted on: 28 November 2015.
Revised on: 19 January 2016.
Accepted on: 13 February 2016.
___________________International Journal of Heavy Vehicle Systems
Submitted on: 21 January 2013.
Revised on: 18 February 2013.
Accepted on: 10 April 2013.
___________________International Journal of Heavy Vehicle Systems
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Submitted on: 16 December 2014.
Revised on: 04 March 2015.
Accepted on: 19 March 2015.
___________________International Journal of Heavy Vehicle Systems
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Submitted on: 21 August 1998.
Revised on: 10 November 1998.
Accepted on: 20 December 1998.
___________________International Journal of Heavy Vehicle Systems