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Submitted on: 26 July 2023.
Revised on: 24 October 2023.
Accepted on: 14 November 2023.
___________________ECONOMETRIC THEORY---CAMBRIDGE UNIV PRESS
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Submitted on: 27 December 2010.
Revised on: 24 April 2011.
Accepted on: 21 June 2011.
___________________ECONOMETRIC THEORY---CAMBRIDGE UNIV PRESS