8Rosenstein,S. and Wyatt, J. G. Outside Directors, Board Independence and Shareholder Wealth [ J ]. Journal of Financial Economics, 1990,26, (2) : 175 - 191.
9Weisbach, Michael S. Outside Directors and CEO Turnover [ J]. Journal of Financial Economics, 1988,20, (January/ March) :431 - 460.
10Yermack, D. Higher Valuation of Companies With A Small Board of Directors[ J ]. Journal of Financial Economics, 1996,40: 185 - 212.