Submitted on: 02 March 2018.
Revised on: 21 June 2018.
Accepted on: 09 August 2018.
___________________Journal of Applied Mathematics and Computing
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Submitted on: 23 December 2006.
Revised on: 14 January 2007.
Accepted on: 05 February 2007.
___________________Journal of Applied Mathematics and Computing
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Submitted on: 20 February 2011.
Revised on: 20 May 2011.
Accepted on: 13 June 2011.
___________________Journal of Applied Mathematics and Computing
Submitted on: 15 March 2022.
Revised on: 07 May 2022.
Accepted on: 09 June 2022.
___________________Journal of Applied Mathematics and Computing
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