Submitted on: 20 January 2018.
Revised on: 07 May 2018.
Accepted on: 01 July 2018.
___________________INTERNATIONAL JOURNAL OF MODERN PHYSICS D
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Submitted on: 23 December 2021.
Revised on: 12 January 2022.
Accepted on: 10 February 2022.
___________________INTERNATIONAL JOURNAL OF MODERN PHYSICS D
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Submitted on: 12 December 1998.
Revised on: 06 February 1999.
Accepted on: 02 March 1999.
___________________INTERNATIONAL JOURNAL OF MODERN PHYSICS D