Submitted on: 07 February 2014.
Revised on: 24 May 2014.
Accepted on: 05 July 2014.
___________________CHEMICAL PHYSICS LETTERS---ELSEVIER
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Submitted on: 09 August 2014.
Revised on: 14 September 2014.
Accepted on: 28 October 2014.
___________________CHEMICAL PHYSICS LETTERS---ELSEVIER
Submitted on: 29 July 2018.
Revised on: 01 November 2018.
Accepted on: 11 December 2018.
___________________CHEMICAL PHYSICS LETTERS---ELSEVIER
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Submitted on: 06 November 2015.
Revised on: 03 January 2016.
Accepted on: 17 February 2016.
___________________CHEMICAL PHYSICS LETTERS---ELSEVIER
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