Submitted on: 25 October 2000.
Revised on: 03 February 2001.
Accepted on: 31 March 2001.
___________________Annals of Corporate Governance
http://reply.papertrans.cn/1/18/1771/1771-32.png
Submitted on: 14 July 2010.
Revised on: 09 November 2010.
Accepted on: 20 November 2010.
___________________Annals of Corporate Governance
http://reply.papertrans.cn/1/18/1771/1771-34.png
Submitted on: 25 June 2012.
Revised on: 04 August 2012.
Accepted on: 25 August 2012.
___________________Annals of Corporate Governance
http://reply.papertrans.cn/1/18/1771/1771-36.png