http://reply.papertrans.cn/2/129/12879/12879-31.png
http://reply.papertrans.cn/2/129/12879/12879-32.png
http://reply.papertrans.cn/2/129/12879/12879-33.png
Submitted on: 30 May 2010.
Revised on: 14 July 2010.
Accepted on: 06 August 2010.
___________________International Finance---WILEY
http://reply.papertrans.cn/2/129/12879/12879-35.png
Submitted on: 03 October 1999.
Revised on: 09 December 1999.
Accepted on: 30 December 1999.
___________________International Finance---WILEY