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Submitted on: 24 March 2014.
Revised on: 24 June 2014.
Accepted on: 24 July 2014.
___________________International Journal of Mathematical Engineering and Management Sciences
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Submitted on: 24 September 2023.
Revised on: 05 November 2023.
Accepted on: 20 December 2023.
___________________International Journal of Mathematical Engineering and Management Sciences
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