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Submitted on: 13 May 2020.
Revised on: 31 July 2020.
Accepted on: 11 August 2020.
___________________International Journal of Engineering Systems Modelling and SImulation
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Submitted on: 16 October 1999.
Revised on: 13 November 1999.
Accepted on: 04 December 1999.
___________________International Journal of Engineering Systems Modelling and SImulation
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Submitted on: 02 December 2002.
Revised on: 13 March 2003.
Accepted on: 03 May 2003.
___________________International Journal of Engineering Systems Modelling and SImulation