Submitted on: 24 January 2005.
Revised on: 18 May 2005.
Accepted on: 24 June 2005.
___________________INSURANCE MATHEMATICS & ECONOMICS
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Submitted on: 01 July 2005.
Revised on: 16 August 2005.
Accepted on: 16 September 2005.
___________________INSURANCE MATHEMATICS & ECONOMICS
Submitted on: 30 January 2010.
Revised on: 20 February 2010.
Accepted on: 15 April 2010.
___________________INSURANCE MATHEMATICS & ECONOMICS
http://reply.papertrans.cn/2/128/12711/12711-35.png
Submitted on: 29 June 2000.
Revised on: 29 August 2000.
Accepted on: 07 October 2000.
___________________INSURANCE MATHEMATICS & ECONOMICS