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Submitted on: 30 September 2022.
Revised on: 18 January 2023.
Accepted on: 07 March 2023.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 26 May 2014.
Revised on: 05 July 2014.
Accepted on: 12 August 2014.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
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Submitted on: 14 April 2005.
Revised on: 29 May 2005.
Accepted on: 27 July 2005.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 20 January 2011.
Revised on: 02 March 2011.
Accepted on: 11 April 2011.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
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Submitted on: 29 April 1998.
Revised on: 22 August 1998.
Accepted on: 06 October 1998.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
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