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Submitted on: 31 July 2004.
Revised on: 13 November 2004.
Accepted on: 28 November 2004.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER
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Submitted on: 05 August 2013.
Revised on: 26 September 2013.
Accepted on: 24 October 2013.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER
Submitted on: 17 April 2016.
Revised on: 07 June 2016.
Accepted on: 05 August 2016.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER
Submitted on: 16 August 2018.
Revised on: 19 October 2018.
Accepted on: 11 December 2018.
___________________JOURNAL OF SUPERCOMPUTING---SPRINGER
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