Submitted on: 20 October 2018.
Revised on: 05 January 2019.
Accepted on: 13 February 2019.
___________________Communications in Applied Mathematics and Computational Science
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Submitted on: 27 September 2012.
Revised on: 10 November 2012.
Accepted on: 04 January 2013.
___________________Communications in Applied Mathematics and Computational Science
Submitted on: 10 December 2005.
Revised on: 23 January 2006.
Accepted on: 21 February 2006.
___________________Communications in Applied Mathematics and Computational Science
Submitted on: 10 October 2016.
Revised on: 16 November 2016.
Accepted on: 08 January 2017.
___________________Communications in Applied Mathematics and Computational Science
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Submitted on: 24 July 2010.
Revised on: 08 November 2010.
Accepted on: 18 December 2010.
___________________Communications in Applied Mathematics and Computational Science
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