Submitted on: 10 September 2019.
Revised on: 21 December 2019.
Accepted on: 23 January 2020.
___________________International Energy Journal---REGIONAL ENERGY RESOURCES INFO CENTER
Submitted on: 16 March 2014.
Revised on: 22 June 2014.
Accepted on: 14 July 2014.
___________________International Energy Journal---REGIONAL ENERGY RESOURCES INFO CENTER
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Submitted on: 19 September 2011.
Revised on: 17 November 2011.
Accepted on: 18 December 2011.
___________________International Energy Journal---REGIONAL ENERGY RESOURCES INFO CENTER
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Submitted on: 08 December 2009.
Revised on: 15 March 2010.
Accepted on: 10 April 2010.
___________________International Energy Journal---REGIONAL ENERGY RESOURCES INFO CENTER
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Submitted on: 07 September 2017.
Revised on: 13 December 2017.
Accepted on: 25 December 2017.
___________________International Energy Journal---REGIONAL ENERGY RESOURCES INFO CENTER
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Submitted on: 30 March 2004.
Revised on: 15 July 2004.
Accepted on: 02 September 2004.
___________________International Energy Journal---REGIONAL ENERGY RESOURCES INFO CENTER