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Submitted on: 04 March 2015.
Revised on: 13 June 2015.
Accepted on: 05 July 2015.
___________________Journal of Engineering Design and Technology
Submitted on: 10 April 2000.
Revised on: 17 May 2000.
Accepted on: 12 July 2000.
___________________Journal of Engineering Design and Technology
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Submitted on: 16 April 2013.
Revised on: 30 June 2013.
Accepted on: 12 July 2013.
___________________Journal of Engineering Design and Technology
Submitted on: 12 October 2011.
Revised on: 20 December 2011.
Accepted on: 10 January 2012.
___________________Journal of Engineering Design and Technology
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