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Submitted on: 02 January 2023.
Revised on: 01 February 2023.
Accepted on: 20 February 2023.
___________________ESAIM-Probability and Statistics
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Submitted on: 22 February 2008.
Revised on: 29 May 2008.
Accepted on: 18 June 2008.
___________________ESAIM-Probability and Statistics
Submitted on: 12 February 2004.
Revised on: 09 June 2004.
Accepted on: 16 July 2004.
___________________ESAIM-Probability and Statistics
Submitted on: 12 December 2007.
Revised on: 05 February 2008.
Accepted on: 03 April 2008.
___________________ESAIM-Probability and Statistics
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http://reply.papertrans.cn/1/89/8814/8814-18.png
Submitted on: 16 July 2013.
Revised on: 19 October 2013.
Accepted on: 14 November 2013.
___________________ESAIM-Probability and Statistics
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