Submitted on: 19 October 2001.
Revised on: 22 January 2002.
Accepted on: 13 March 2002.
___________________International Journal of Mathematics and Physics
Submitted on: 08 January 2025.
Revised on: 31 January 2025.
Accepted on: 15 March 2025.
___________________International Journal of Mathematics and Physics
Submitted on: 28 May 2023.
Revised on: 21 June 2023.
Accepted on: 03 July 2023.
___________________International Journal of Mathematics and Physics
Submitted on: 27 November 2021.
Revised on: 26 December 2021.
Accepted on: 19 February 2022.
___________________International Journal of Mathematics and Physics
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Submitted on: 17 September 2021.
Revised on: 17 October 2021.
Accepted on: 12 November 2021.
___________________International Journal of Mathematics and Physics
Submitted on: 23 August 2021.
Revised on: 21 September 2021.
Accepted on: 20 October 2021.
___________________International Journal of Mathematics and Physics
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