Submitted on: 29 July 2000.
Revised on: 09 November 2000.
Accepted on: 27 November 2000.
___________________GENERAL RELATIVITY AND GRAVITATION
Submitted on: 05 September 2002.
Revised on: 28 December 2002.
Accepted on: 11 February 2003.
___________________GENERAL RELATIVITY AND GRAVITATION
Submitted on: 02 July 2024.
Revised on: 02 September 2024.
Accepted on: 26 September 2024.
___________________GENERAL RELATIVITY AND GRAVITATION
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Submitted on: 23 July 2015.
Revised on: 10 September 2015.
Accepted on: 27 September 2015.
___________________GENERAL RELATIVITY AND GRAVITATION
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