8Anup Agrawal and Charles R.Knoeber,Firm Performance and Mechanisms to Control Agency Problems between Managers and Shareholder[J],Journal of Financial and Quantitative Analysis,1996,31 (3):377-397.
9Bahgat and Black,Board Independence and Long term Firm Performance[A].University of Colorado Working Paperc.2000,231-273.
10Bhagat,S.and Black,B.,The uncertain Relationship between Board Composition and Firm Performance[J],The Business Lawyer,1999,54 (3):921-963.