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Submitted on: 18 October 2006.
Revised on: 02 January 2007.
Accepted on: 18 February 2007.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
Submitted on: 10 August 2007.
Revised on: 04 December 2007.
Accepted on: 18 January 2008.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
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Submitted on: 24 November 2006.
Revised on: 17 March 2007.
Accepted on: 01 May 2007.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
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Submitted on: 13 July 2010.
Revised on: 10 September 2010.
Accepted on: 17 October 2010.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
Submitted on: 30 May 2004.
Revised on: 19 June 2004.
Accepted on: 08 July 2004.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY