Submitted on: 02 October 2014.
Revised on: 11 November 2014.
Accepted on: 24 November 2014.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
http://reply.papertrans.cn/1/55/5477/5477-12.png
Submitted on: 14 October 2023.
Revised on: 05 November 2023.
Accepted on: 27 November 2023.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
http://reply.papertrans.cn/1/55/5477/5477-14.png
Submitted on: 13 April 2002.
Revised on: 21 May 2002.
Accepted on: 03 June 2002.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 15 May 2008.
Revised on: 02 August 2008.
Accepted on: 27 September 2008.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
Submitted on: 16 April 2006.
Revised on: 07 June 2006.
Accepted on: 18 July 2006.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD
http://reply.papertrans.cn/1/55/5477/5477-18.png
http://reply.papertrans.cn/1/55/5477/5477-19.png
Submitted on: 18 April 2016.
Revised on: 28 June 2016.
Accepted on: 23 July 2016.
___________________CLASSICAL AND QUANTUM GRAVITY---IOP PUBLISHING LTD