Submitted on: 22 January 2000.
Revised on: 25 February 2000.
Accepted on: 20 March 2000.
NULL
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http://reply.papertrans.cn/3/266/26550/26550-13.png
http://reply.papertrans.cn/3/266/26550/26550-14.png
Submitted on: 25 March 2002.
Revised on: 28 April 2002.
Accepted on: 10 May 2002.
Review of Economic Perspectives
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Submitted on: 24 November 2020.
Revised on: 18 December 2020.
Accepted on: 14 January 2021.
Review of Economic Perspectives
Submitted on: 16 July 2000.
Revised on: 04 August 2000.
Accepted on: 14 August 2000.
Review of Economic Perspectives
Submitted on: 19 February 2020.
Revised on: 27 March 2020.
Accepted on: 15 April 2020.
NULL
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