6Ronald A. Dye Faming management in an overlapping generation model[J]. Journal of Accounting Research, 1988,26 : 195-35.
7Andrei Shleifer,Daniel. Wolfenzon Investor protection and equity markets[J]. Journal of Finance Economics, 2002,66 : 3-27.
8[Bebchuk Lucian, Reiner Kmakrnan, George Traints. Stock pyramids, cross-ownership and dual class equity: The Creation and agency cost of seperating control from cashflow rights[M]. NBER Working Paper, 1999,6951.