Submitted on: 25 December 2007.
Revised on: 30 March 2008.
Accepted on: 01 May 2008.
___________________CIRP Journal of Manufacturing Science and Technology
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Submitted on: 04 March 2007.
Revised on: 12 April 2007.
Accepted on: 29 May 2007.
___________________CIRP Journal of Manufacturing Science and Technology
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