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http://reply.papertrans.cn/2/123/12243/12243-22.png
Submitted on: 02 December 2008.
Revised on: 11 March 2009.
Accepted on: 02 April 2009.
___________________IMA Journal of Management Mathematics
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Submitted on: 13 September 2005.
Revised on: 29 October 2005.
Accepted on: 16 December 2005.
___________________IMA Journal of Management Mathematics
Submitted on: 23 July 2021.
Revised on: 23 October 2021.
Accepted on: 14 November 2021.
___________________IMA Journal of Management Mathematics
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Submitted on: 03 January 2016.
Revised on: 27 January 2016.
Accepted on: 23 February 2016.
___________________IMA Journal of Management Mathematics
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Submitted on: 09 January 2021.
Revised on: 21 April 2021.
Accepted on: 07 May 2021.
___________________IMA Journal of Management Mathematics