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Submitted on: 04 August 2019.
Revised on: 12 October 2019.
Accepted on: 29 October 2019.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
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Submitted on: 27 April 2009.
Revised on: 14 July 2009.
Accepted on: 29 August 2009.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
Submitted on: 14 February 2021.
Revised on: 21 March 2021.
Accepted on: 03 April 2021.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
Submitted on: 08 March 2011.
Revised on: 09 April 2011.
Accepted on: 12 May 2011.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
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Submitted on: 16 March 2009.
Revised on: 18 April 2009.
Accepted on: 10 June 2009.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC