Submitted on: 31 January 2011.
Revised on: 04 April 2011.
Accepted on: 05 May 2011.
___________________INTERNATIONAL JOURNAL OF CONTROL
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Submitted on: 07 December 2021.
Revised on: 14 March 2022.
Accepted on: 27 April 2022.
___________________INTERNATIONAL JOURNAL OF CONTROL
Submitted on: 06 January 2002.
Revised on: 19 February 2002.
Accepted on: 29 March 2002.
___________________INTERNATIONAL JOURNAL OF CONTROL