Submitted on: 14 May 2001.
Revised on: 29 June 2001.
Accepted on: 08 August 2001.
___________________ECONOMETRICA---WILEY
Submitted on: 01 March 2004.
Revised on: 05 May 2004.
Accepted on: 26 May 2004.
___________________ECONOMETRICA---WILEY
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Submitted on: 22 April 2017.
Revised on: 06 June 2017.
Accepted on: 28 June 2017.
___________________ECONOMETRICA---WILEY
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Submitted on: 07 June 2021.
Revised on: 23 September 2021.
Accepted on: 10 November 2021.
___________________ECONOMETRICA---WILEY