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Submitted on: 28 May 2008.
Revised on: 03 July 2008.
Accepted on: 21 August 2008.
___________________Journal of Applied Mechanics and Technical Physics
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Submitted on: 28 February 2008.
Revised on: 05 June 2008.
Accepted on: 29 June 2008.
___________________Journal of Applied Mechanics and Technical Physics
Submitted on: 17 March 2008.
Revised on: 01 May 2008.
Accepted on: 27 June 2008.
___________________Journal of Applied Mechanics and Technical Physics
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Submitted on: 05 November 2004.
Revised on: 24 February 2005.
Accepted on: 24 April 2005.
___________________Journal of Applied Mechanics and Technical Physics
Submitted on: 30 June 2001.
Revised on: 13 August 2001.
Accepted on: 12 September 2001.
___________________Journal of Applied Mechanics and Technical Physics