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Submitted on: 13 May 2013.
Revised on: 18 August 2013.
Accepted on: 30 August 2013.
___________________IEEE Pulse---IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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Submitted on: 01 June 2004.
Revised on: 15 August 2004.
Accepted on: 02 October 2004.
___________________IEEE Pulse---IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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