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Submitted on: 16 May 2004.
Revised on: 04 July 2004.
Accepted on: 28 August 2004.
___________________Energy & Environment---SAGE PUBLICATIONS LTD
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Submitted on: 06 June 2019.
Revised on: 22 August 2019.
Accepted on: 09 September 2019.
___________________Energy & Environment---SAGE PUBLICATIONS LTD
Submitted on: 21 March 2016.
Revised on: 30 April 2016.
Accepted on: 13 May 2016.
___________________Energy & Environment---SAGE PUBLICATIONS LTD
Submitted on: 17 February 2018.
Revised on: 06 May 2018.
Accepted on: 01 July 2018.
___________________Energy & Environment---SAGE PUBLICATIONS LTD
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Submitted on: 26 February 2014.
Revised on: 24 May 2014.
Accepted on: 27 June 2014.
___________________Energy & Environment---SAGE PUBLICATIONS LTD