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Submitted on: 28 March 2003.
Revised on: 12 July 2003.
Accepted on: 01 September 2003.
___________________COMPUTERS & STRUCTURES---PERGAMON-ELSEVIER SCIENCE LTD
Submitted on: 13 December 2012.
Revised on: 23 January 2013.
Accepted on: 26 February 2013.
___________________COMPUTERS & STRUCTURES---PERGAMON-ELSEVIER SCIENCE LTD
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