Submitted on: 21 November 1998.
Revised on: 12 March 1999.
Accepted on: 30 April 1999.
___________________Econometrics Journal---OXFORD UNIV PRESS
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Submitted on: 26 May 2012.
Revised on: 14 September 2012.
Accepted on: 12 November 2012.
___________________Econometrics Journal---OXFORD UNIV PRESS
Submitted on: 08 July 2023.
Revised on: 04 November 2023.
Accepted on: 26 November 2023.
___________________Econometrics Journal---OXFORD UNIV PRESS
Submitted on: 09 October 1999.
Revised on: 04 January 2000.
Accepted on: 06 February 2000.
___________________Econometrics Journal---OXFORD UNIV PRESS
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Submitted on: 27 April 2024.
Revised on: 17 June 2024.
Accepted on: 09 July 2024.
___________________Econometrics Journal---OXFORD UNIV PRESS
Submitted on: 20 August 2004.
Revised on: 14 December 2004.
Accepted on: 28 December 2004.
___________________Econometrics Journal---OXFORD UNIV PRESS
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Submitted on: 14 November 2018.
Revised on: 20 December 2018.
Accepted on: 12 February 2019.
___________________Econometrics Journal---OXFORD UNIV PRESS