Submitted on: 24 December 2003.
Revised on: 08 January 2004.
Accepted on: 28 January 2004.
Quantitative Finance and Economics
Submitted on: 28 March 2011.
Revised on: 18 April 2011.
Accepted on: 11 May 2011.
Quantitative Finance and Economics
Submitted on: 15 May 2000.
Revised on: 27 May 2000.
Accepted on: 17 June 2000.
Quantitative Finance and Economics
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