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Submitted on: 16 June 2020.
Revised on: 07 October 2020.
Accepted on: 25 October 2020.
___________________Extreme Mechanics Letters---ELSEVIER
Submitted on: 02 July 2018.
Revised on: 11 August 2018.
Accepted on: 21 September 2018.
___________________Extreme Mechanics Letters---ELSEVIER
Submitted on: 29 June 2009.
Revised on: 25 October 2009.
Accepted on: 12 November 2009.
___________________Extreme Mechanics Letters---ELSEVIER
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Submitted on: 19 January 2003.
Revised on: 12 May 2003.
Accepted on: 01 July 2003.
___________________Extreme Mechanics Letters---ELSEVIER