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Submitted on: 11 April 2002.
Revised on: 20 May 2002.
Accepted on: 04 July 2002.
___________________Energy Research & Social Science
Submitted on: 14 November 2012.
Revised on: 19 December 2012.
Accepted on: 01 February 2013.
___________________Energy Research & Social Science
Submitted on: 18 September 2019.
Revised on: 24 December 2019.
Accepted on: 11 January 2020.
___________________Energy Research & Social Science
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Submitted on: 08 March 2024.
Revised on: 05 July 2024.
Accepted on: 21 July 2024.
___________________Energy Research & Social Science
Submitted on: 02 July 2012.
Revised on: 12 August 2012.
Accepted on: 28 September 2012.
___________________Energy Research & Social Science
Submitted on: 02 August 2005.
Revised on: 06 September 2005.
Accepted on: 30 October 2005.
___________________Energy Research & Social Science
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