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Submitted on: 16 February 2002.
Revised on: 07 June 2002.
Accepted on: 07 July 2002.
___________________Journal of Energy Chemistry---ELSEVIER
Submitted on: 19 September 2000.
Revised on: 05 November 2000.
Accepted on: 12 December 2000.
___________________Journal of Energy Chemistry---ELSEVIER
Submitted on: 22 February 2007.
Revised on: 11 May 2007.
Accepted on: 31 May 2007.
___________________Journal of Energy Chemistry---ELSEVIER
Submitted on: 05 February 2011.
Revised on: 25 March 2011.
Accepted on: 06 April 2011.
___________________Journal of Energy Chemistry---ELSEVIER
Submitted on: 07 January 2007.
Revised on: 04 May 2007.
Accepted on: 17 May 2007.
___________________Journal of Energy Chemistry---ELSEVIER