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Submitted on: 08 December 2010.
Revised on: 19 February 2011.
Accepted on: 12 April 2011.
___________________ENERGY JOURNAL---INT ASSOC ENERGY ECONOMICS
Submitted on: 17 July 2013.
Revised on: 08 September 2013.
Accepted on: 23 October 2013.
___________________ENERGY JOURNAL---INT ASSOC ENERGY ECONOMICS
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Submitted on: 26 June 2021.
Revised on: 17 August 2021.
Accepted on: 10 September 2021.
___________________ENERGY JOURNAL---INT ASSOC ENERGY ECONOMICS
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Submitted on: 02 June 2009.
Revised on: 01 August 2009.
Accepted on: 20 August 2009.
___________________ENERGY JOURNAL---INT ASSOC ENERGY ECONOMICS