http://reply.papertrans.cn/3/239/23884/23884-31.png
Submitted on: 15 March 2021.
Revised on: 20 April 2021.
Accepted on: 08 May 2021.
OXFORD BULLETIN OF ECONOMICS AND STATISTICS
Submitted on: 19 October 2014.
Revised on: 03 November 2014.
Accepted on: 19 November 2014.
OXFORD BULLETIN OF ECONOMICS AND STATISTICS
http://reply.papertrans.cn/3/239/23884/23884-34.png
http://reply.papertrans.cn/3/239/23884/23884-35.png
Submitted on: 01 February 2002.
Revised on: 23 February 2002.
Accepted on: 19 March 2002.
OXFORD BULLETIN OF ECONOMICS AND STATISTICS