http://reply.papertrans.cn/1/59/5821/5821-11.png
Submitted on: 13 December 2010.
Revised on: 17 January 2011.
Accepted on: 01 March 2011.
___________________Cogent Economics & Finance---TAYLOR & FRANCIS AS
Submitted on: 05 December 2006.
Revised on: 04 April 2007.
Accepted on: 26 April 2007.
___________________Cogent Economics & Finance---TAYLOR & FRANCIS AS
http://reply.papertrans.cn/1/59/5821/5821-14.png
http://reply.papertrans.cn/1/59/5821/5821-15.png
http://reply.papertrans.cn/1/59/5821/5821-16.png
Submitted on: 21 December 2020.
Revised on: 19 March 2021.
Accepted on: 15 May 2021.
___________________Cogent Economics & Finance---TAYLOR & FRANCIS AS
http://reply.papertrans.cn/1/59/5821/5821-18.png
Submitted on: 02 April 2015.
Revised on: 09 July 2015.
Accepted on: 29 July 2015.
___________________Cogent Economics & Finance---TAYLOR & FRANCIS AS
Submitted on: 14 October 2008.
Revised on: 01 December 2008.
Accepted on: 07 January 2009.
___________________Cogent Economics & Finance---TAYLOR & FRANCIS AS