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Submitted on: 17 April 1998.
Revised on: 07 June 1998.
Accepted on: 25 July 1998.
___________________INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
Submitted on: 26 June 2014.
Revised on: 18 July 2014.
Accepted on: 11 August 2014.
___________________INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
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