http://reply.papertrans.cn/3/239/23885/23885-11.png
http://reply.papertrans.cn/3/239/23885/23885-12.png
Submitted on: 20 December 2003.
Revised on: 10 January 2004.
Accepted on: 01 February 2004.
OXFORD BULLETIN OF ECONOMICS AND STATISTICS
http://reply.papertrans.cn/3/239/23885/23885-14.png
http://reply.papertrans.cn/3/239/23885/23885-15.png
Submitted on: 06 January 2000.
Revised on: 10 February 2000.
Accepted on: 29 February 2000.
OXFORD BULLETIN OF ECONOMICS AND STATISTICS
Submitted on: 28 October 2021.
Revised on: 27 November 2021.
Accepted on: 18 December 2021.
OXFORD BULLETIN OF ECONOMICS AND STATISTICS
http://reply.papertrans.cn/3/239/23885/23885-18.png
Submitted on: 26 March 2007.
Revised on: 28 April 2007.
Accepted on: 18 May 2007.
OXFORD BULLETIN OF ECONOMICS AND STATISTICS
http://reply.papertrans.cn/3/239/23885/23885-20.png