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Submitted on: 10 October 1999.
Revised on: 28 December 1999.
Accepted on: 04 February 2000.
___________________IEEE Access---IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Submitted on: 07 July 2018.
Revised on: 10 August 2018.
Accepted on: 22 August 2018.
___________________IEEE Access---IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Submitted on: 07 November 2007.
Revised on: 07 January 2008.
Accepted on: 14 February 2008.
___________________IEEE Access---IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC