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Submitted on: 22 October 2012.
Revised on: 31 December 2012.
Accepted on: 15 January 2013.
___________________INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
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Submitted on: 22 December 2000.
Revised on: 18 February 2001.
Accepted on: 04 April 2001.
___________________INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS