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Submitted on: 03 September 2007.
Revised on: 30 December 2007.
Accepted on: 25 February 2008.
___________________INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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Submitted on: 26 November 2014.
Revised on: 21 December 2014.
Accepted on: 14 January 2015.
___________________INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Submitted on: 11 December 2016.
Revised on: 04 April 2017.
Accepted on: 15 May 2017.
___________________INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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Submitted on: 25 September 1999.
Revised on: 29 December 1999.
Accepted on: 14 January 2000.
___________________INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Submitted on: 03 June 2005.
Revised on: 23 September 2005.
Accepted on: 28 October 2005.
___________________INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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