Submitted on: 25 August 2006.
Revised on: 12 October 2006.
Accepted on: 26 October 2006.
___________________International Journal of Reliability Quality and Safety Engineering
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Submitted on: 26 April 2021.
Revised on: 25 June 2021.
Accepted on: 15 August 2021.
___________________International Journal of Reliability Quality and Safety Engineering
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