Submitted on: 23 January 2010.
Revised on: 28 April 2010.
Accepted on: 15 May 2010.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
Submitted on: 21 March 1998.
Revised on: 18 July 1998.
Accepted on: 14 September 1998.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
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Submitted on: 10 September 2021.
Revised on: 10 October 2021.
Accepted on: 29 October 2021.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
Submitted on: 13 July 2004.
Revised on: 28 October 2004.
Accepted on: 28 November 2004.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY
Submitted on: 11 April 1999.
Revised on: 17 May 1999.
Accepted on: 29 May 1999.
___________________INTERNATIONAL JOURNAL OF PHOTOENERGY