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Submitted on: 08 March 1998.
Revised on: 24 March 1998.
Accepted on: 31 March 1998.
Results in Engineering---ELSEVIER
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Submitted on: 17 October 2002.
Revised on: 27 October 2002.
Accepted on: 03 November 2002.
NULL
Submitted on: 06 May 2015.
Revised on: 15 June 2015.
Accepted on: 29 June 2015.
Results in Engineering---ELSEVIER
Submitted on: 27 July 2013.
Revised on: 25 August 2013.
Accepted on: 01 September 2013.
NULL
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