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Submitted on: 12 June 2018.
Revised on: 09 October 2018.
Accepted on: 02 November 2018.
___________________Journal of Mathematical Physics Analysis Geometry
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Submitted on: 02 July 2011.
Revised on: 05 August 2011.
Accepted on: 25 August 2011.
___________________Journal of Mathematical Physics Analysis Geometry
Submitted on: 09 February 2012.
Revised on: 29 March 2012.
Accepted on: 12 May 2012.
___________________Journal of Mathematical Physics Analysis Geometry
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Submitted on: 29 June 2014.
Revised on: 06 September 2014.
Accepted on: 18 October 2014.
___________________Journal of Mathematical Physics Analysis Geometry
Submitted on: 30 August 2021.
Revised on: 28 September 2021.
Accepted on: 15 October 2021.
___________________Journal of Mathematical Physics Analysis Geometry