Submitted on: 25 March 2002.
Revised on: 11 July 2002.
Accepted on: 01 September 2002.
___________________American Law and Economics Review
Submitted on: 02 March 2004.
Revised on: 15 May 2004.
Accepted on: 17 June 2004.
___________________American Law and Economics Review
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Submitted on: 06 June 2012.
Revised on: 07 July 2012.
Accepted on: 07 August 2012.
___________________American Law and Economics Review
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