Submitted on: 07 February 2004.
Revised on: 16 May 2004.
Accepted on: 10 July 2004.
___________________International Journal of Advances in Engineering Sciences and Applied Mathematics
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Submitted on: 11 January 2003.
Revised on: 20 March 2003.
Accepted on: 17 April 2003.
___________________International Journal of Advances in Engineering Sciences and Applied Mathematics
Submitted on: 09 July 2017.
Revised on: 16 September 2017.
Accepted on: 26 October 2017.
___________________International Journal of Advances in Engineering Sciences and Applied Mathematics