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Submitted on: 12 July 2011.
Revised on: 26 July 2011.
Accepted on: 06 August 2011.
PHYSICAL REVIEW E
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Submitted on: 20 September 2012.
Revised on: 25 October 2012.
Accepted on: 19 November 2012.
PHYSICAL REVIEW E---AMER PHYSICAL SOC
Submitted on: 26 November 2006.
Revised on: 14 December 2006.
Accepted on: 07 January 2007.
PHYSICAL REVIEW E
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