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Submitted on: 02 February 1998.
Revised on: 11 April 1998.
Accepted on: 06 May 1998.
___________________INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS
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Submitted on: 06 July 2017.
Revised on: 09 August 2017.
Accepted on: 31 August 2017.
___________________INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS
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Submitted on: 13 May 2009.
Revised on: 11 June 2009.
Accepted on: 07 July 2009.
___________________INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS
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Submitted on: 25 August 2009.
Revised on: 07 October 2009.
Accepted on: 26 October 2009.
___________________INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS
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