Submitted on: 26 July 2012.
Revised on: 14 November 2012.
Accepted on: 27 December 2012.
___________________CONTEMPORARY PHYSICS---TAYLOR & FRANCIS LTD
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Submitted on: 29 October 2019.
Revised on: 04 February 2020.
Accepted on: 03 April 2020.
___________________CONTEMPORARY PHYSICS---TAYLOR & FRANCIS LTD
Submitted on: 22 September 2020.
Revised on: 11 November 2020.
Accepted on: 08 January 2021.
___________________CONTEMPORARY PHYSICS---TAYLOR & FRANCIS LTD
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Submitted on: 06 October 2021.
Revised on: 05 December 2021.
Accepted on: 03 January 2022.
___________________CONTEMPORARY PHYSICS---TAYLOR & FRANCIS LTD
Submitted on: 12 November 2004.
Revised on: 09 March 2005.
Accepted on: 29 April 2005.
___________________CONTEMPORARY PHYSICS---TAYLOR & FRANCIS LTD
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