Submitted on: 12 December 2004.
Revised on: 12 January 2005.
Accepted on: 23 January 2005.
MATHEMATICAL FINANCE
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Submitted on: 29 May 2006.
Revised on: 08 June 2006.
Accepted on: 30 June 2006.
MATHEMATICAL FINANCE
Submitted on: 21 September 2002.
Revised on: 04 November 2002.
Accepted on: 13 November 2002.
MATHEMATICAL FINANCE
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