Submitted on: 29 October 2008.
Revised on: 13 January 2009.
Accepted on: 26 February 2009.
___________________ACTA MECHANICA SOLIDA SINICA---SPRINGER
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Submitted on: 10 February 2017.
Revised on: 22 May 2017.
Accepted on: 12 July 2017.
___________________ACTA MECHANICA SOLIDA SINICA---SPRINGER
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Submitted on: 10 January 2006.
Revised on: 21 February 2006.
Accepted on: 30 March 2006.
___________________ACTA MECHANICA SOLIDA SINICA---SPRINGER
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