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Submitted on: 16 October 1999.
Revised on: 17 November 1999.
Accepted on: 31 December 1999.
___________________JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING
Submitted on: 25 December 2002.
Revised on: 20 February 2003.
Accepted on: 04 March 2003.
___________________JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING
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