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Submitted on: 14 April 2005.
Revised on: 16 June 2005.
Accepted on: 29 July 2005.
___________________JOURNAL OF ELECTRONIC TESTING-THEORY AND APPLICATIONS
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Submitted on: 10 September 2001.
Revised on: 01 January 2002.
Accepted on: 14 January 2002.
___________________JOURNAL OF ELECTRONIC TESTING-THEORY AND APPLICATIONS
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Submitted on: 09 July 2007.
Revised on: 14 August 2007.
Accepted on: 09 September 2007.
___________________JOURNAL OF ELECTRONIC TESTING-THEORY AND APPLICATIONS