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Submitted on: 09 January 2009.
Revised on: 18 February 2009.
Accepted on: 30 March 2009.
___________________APPLIED ENERGY---ELSEVIER SCI LTD
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Submitted on: 28 September 2014.
Revised on: 15 November 2014.
Accepted on: 30 November 2014.
___________________APPLIED ENERGY---ELSEVIER SCI LTD
Submitted on: 15 March 2012.
Revised on: 04 June 2012.
Accepted on: 28 July 2012.
___________________APPLIED ENERGY---ELSEVIER SCI LTD
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