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Submitted on: 10 August 2009.
Revised on: 16 November 2009.
Accepted on: 30 November 2009.
___________________Journal of Computational Methods in Sciences and Engineering
Submitted on: 01 April 2012.
Revised on: 05 May 2012.
Accepted on: 26 June 2012.
___________________Journal of Computational Methods in Sciences and Engineering
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Submitted on: 20 July 2003.
Revised on: 30 October 2003.
Accepted on: 05 December 2003.
___________________Journal of Computational Methods in Sciences and Engineering
Submitted on: 04 November 2009.
Revised on: 04 March 2010.
Accepted on: 22 April 2010.
___________________Journal of Computational Methods in Sciences and Engineering
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