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Submitted on: 21 February 2000.
Revised on: 22 March 2000.
Accepted on: 27 April 2000.
___________________IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
Submitted on: 26 August 2018.
Revised on: 11 November 2018.
Accepted on: 27 December 2018.
___________________IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
Submitted on: 24 August 2018.
Revised on: 10 November 2018.
Accepted on: 18 December 2018.
___________________IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
Submitted on: 23 March 2010.
Revised on: 05 July 2010.
Accepted on: 20 July 2010.
___________________IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
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Submitted on: 03 February 2005.
Revised on: 20 April 2005.
Accepted on: 17 June 2005.
___________________IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
Submitted on: 05 February 2003.
Revised on: 05 June 2003.
Accepted on: 06 July 2003.
___________________IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
Submitted on: 15 April 2000.
Revised on: 10 August 2000.
Accepted on: 23 August 2000.
___________________IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION
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