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Submitted on: 27 April 2012.
Revised on: 10 July 2012.
Accepted on: 31 August 2012.
___________________Engineering Studies---ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
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Submitted on: 05 December 2014.
Revised on: 07 February 2015.
Accepted on: 28 March 2015.
___________________Engineering Studies---ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
Submitted on: 19 April 2018.
Revised on: 24 June 2018.
Accepted on: 30 July 2018.
___________________Engineering Studies---ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD