Submitted on: 17 February 2004.
Revised on: 16 March 2004.
Accepted on: 25 April 2004.
___________________Journal of Physics A-Mathematical and Theoretical
Submitted on: 07 August 2024.
Revised on: 20 October 2024.
Accepted on: 07 November 2024.
___________________Journal of Physics A-Mathematical and Theoretical
Submitted on: 16 September 2013.
Revised on: 05 November 2013.
Accepted on: 28 November 2013.
___________________Journal of Physics A-Mathematical and Theoretical
Submitted on: 10 December 2021.
Revised on: 02 February 2022.
Accepted on: 26 February 2022.
___________________Journal of Physics A-Mathematical and Theoretical
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Submitted on: 26 February 2015.
Revised on: 12 April 2015.
Accepted on: 08 May 2015.
___________________Journal of Physics A-Mathematical and Theoretical
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Submitted on: 02 September 2005.
Revised on: 27 December 2005.
Accepted on: 15 January 2006.
___________________Journal of Physics A-Mathematical and Theoretical
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