Submitted on: 09 December 1999.
Revised on: 12 January 2000.
Accepted on: 07 February 2000.
___________________Automatika---TAYLOR & FRANCIS LTD
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Submitted on: 18 April 2006.
Revised on: 08 August 2006.
Accepted on: 26 September 2006.
___________________Automatika---TAYLOR & FRANCIS LTD
Submitted on: 11 August 2024.
Revised on: 28 November 2024.
Accepted on: 11 January 2025.
___________________Automatika---TAYLOR & FRANCIS LTD
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