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Submitted on: 21 May 2008.
Revised on: 14 June 2008.
Accepted on: 17 July 2008.
___________________INTERNATIONAL JOURNAL OF MODERN PHYSICS E
Submitted on: 27 July 2023.
Revised on: 27 September 2023.
Accepted on: 11 November 2023.
___________________INTERNATIONAL JOURNAL OF MODERN PHYSICS E
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Submitted on: 24 August 2015.
Revised on: 07 November 2015.
Accepted on: 19 November 2015.
___________________INTERNATIONAL JOURNAL OF MODERN PHYSICS E
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Submitted on: 10 October 2016.
Revised on: 18 December 2016.
Accepted on: 01 February 2017.
___________________INTERNATIONAL JOURNAL OF MODERN PHYSICS E