Submitted on: 24 January 2003.
Revised on: 10 April 2003.
Accepted on: 08 June 2003.
___________________COMPUTERS & ELECTRICAL ENGINEERING
Submitted on: 17 July 2020.
Revised on: 15 October 2020.
Accepted on: 24 November 2020.
___________________COMPUTERS & ELECTRICAL ENGINEERING
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Submitted on: 19 November 2015.
Revised on: 18 February 2016.
Accepted on: 06 April 2016.
___________________COMPUTERS & ELECTRICAL ENGINEERING
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