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Submitted on: 31 December 2002.
Revised on: 30 March 2003.
Accepted on: 03 May 2003.
___________________International Journal of Mathematical Engineering and Management Sciences
Submitted on: 20 June 2002.
Revised on: 19 September 2002.
Accepted on: 15 November 2002.
___________________International Journal of Mathematical Engineering and Management Sciences
Submitted on: 27 March 2002.
Revised on: 09 June 2002.
Accepted on: 01 July 2002.
___________________International Journal of Mathematical Engineering and Management Sciences
Submitted on: 05 November 2013.
Revised on: 15 January 2014.
Accepted on: 26 February 2014.
___________________International Journal of Mathematical Engineering and Management Sciences
Submitted on: 25 November 2018.
Revised on: 05 January 2019.
Accepted on: 12 February 2019.
___________________International Journal of Mathematical Engineering and Management Sciences
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Submitted on: 31 January 2019.
Revised on: 07 April 2019.
Accepted on: 05 June 2019.
___________________International Journal of Mathematical Engineering and Management Sciences
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