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Submitted on: 28 September 2018.
Revised on: 04 November 2018.
Accepted on: 30 November 2018.
___________________Communications in Applied Mathematics and Computational Science
Submitted on: 17 April 2013.
Revised on: 04 June 2013.
Accepted on: 17 July 2013.
___________________Communications in Applied Mathematics and Computational Science
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Submitted on: 01 November 2010.
Revised on: 14 December 2010.
Accepted on: 15 January 2011.
___________________Communications in Applied Mathematics and Computational Science
Submitted on: 16 June 2006.
Revised on: 30 September 2006.
Accepted on: 22 October 2006.
___________________Communications in Applied Mathematics and Computational Science
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Submitted on: 10 September 2014.
Revised on: 13 October 2014.
Accepted on: 25 November 2014.
___________________Communications in Applied Mathematics and Computational Science