Submitted on: 15 November 2020.
Revised on: 15 January 2021.
Accepted on: 05 March 2021.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 09 May 2014.
Revised on: 20 June 2014.
Accepted on: 11 July 2014.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 14 April 2024.
Revised on: 12 June 2024.
Accepted on: 30 July 2024.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 31 December 2000.
Revised on: 21 March 2001.
Accepted on: 11 May 2001.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 03 December 2021.
Revised on: 06 January 2022.
Accepted on: 19 February 2022.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
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Submitted on: 28 November 2019.
Revised on: 03 February 2020.
Accepted on: 26 March 2020.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 18 July 2018.
Revised on: 14 October 2018.
Accepted on: 28 October 2018.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 25 December 2019.
Revised on: 10 March 2020.
Accepted on: 22 March 2020.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
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