6Steven N., Kaplan and Jeremy C.Stein. The evolution of buyout pricing and financial structure in the 1980s [J] . Quarterly Journal of Economics,Vol. CVIII,Issue 2,1993 (5) : 313-357.
7Jay R.Allen.LBOs-the evolution of financial structures and strategies [J] . Journal of Applied Corporate Finance, 1996,8 (4) :19-29.