9MORK R,SHLEIFER A, VISHNY R W. Management Ownership and Market Valuation : An emprical Analysis [ J ]. Journal of Fi- nance Economics, 1988 (6) :34 - 38.
10SANTERRE R E, NEUN S P. Stock dispersion and executive com- pensation [ J ]. Review of Economics and Statistics, 1986 ( 68 ) : 685 - 687.