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Submitted on: 12 June 2008.
Revised on: 15 July 2008.
Accepted on: 07 September 2008.
___________________International Journal of Automation Technology
Submitted on: 25 February 2012.
Revised on: 18 June 2012.
Accepted on: 09 August 2012.
___________________International Journal of Automation Technology
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Submitted on: 28 September 2020.
Revised on: 28 December 2020.
Accepted on: 19 February 2021.
___________________International Journal of Automation Technology